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REPORT 
of 
fflaQg AXSOT MSR ©O&Sl® 
ORLANDO, FLORIDA 
TESTS CONDUCTED BY 
AAF TACTICAL CENTER 
ORLANDO, FLORIDA 
SUBJECT 
DISSEMINATION OF D.D.T. FROM STANDARD BRITISH EQUIPMENT 
PROJECT No 3735BH725 
DATE 
This document contains information af- 
fecting the national defense of the U.S. 
within the meaning of the Espionage 
Act, 50 U.S. C., 31 and 32, as amended. 
Its transmission or the revelation of its 
contents in any manner to an unauthor- 
ized person is prohibited by law. 
COPY Nc. 
26 April 1945 
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FOR INFORMATION ONLY RESTRICTED 
DISSEMINATION OE D.D.T. FROM STANDARD BRITISH 
EQUIPMENT 
CONTENTS 
Pages 
AAF Board Recommendations & Conclusions-....' 2-16 
Directive for project 17-18 
Test Program i9_24 
Data on Modification of British 5CC lb. S.C.1 25-26 
Data on First and Second Event Tests 27-3C 
Diagram of Range Layout for Third Event Tests • 31-32 
Photographs 33-42 
Meteorological Data for Third Event Tests . . 43-5C 
Density Data on Tests in Third Event 51-77 
Distribution List 78 
1 
AFTAC-5/ +/ '+5-150 
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THE ARLY AIR FORCES BOARD 
Orlando, Florida 
JRVD/TJC/gb-F 
26 April 1945 
ARMY AIR FORCES BOARD PROJECT M0. 3735BH725 
DISSEMINATION OF DDT FROM STANDARD BRITISH EQUIPMENT 
I. OBJECT: 
To determine the practicability of disseminating insecticide 
DDT from aircraft with the standard British 500 lb. S.C.I. (Smoke 
Curtain Installation) tank. 
II. FACTUAL DATA: 
a. The equipment tested under this project was the standard 
British 500 lb, S.C.I. (Smoke Curtain Installation) bomb bay spray tank. 
The capacity of this tank is 25 Imperial or approximately 30 U. S, 
Salmons, The tank body has an overall length of 66 inches and is 13 
Inches in diameter. The discharge pipe, which is located below the tank 
but forms a part thereof, is inches in diameter at the extreme outlet 
orifice and 3 inches in diameter at the point of junction with the tank. 
The air inlet pipe on top of the tank is 1 inch in diameter at the end 
and 2" in diameter at the point of junction with the bank. 
The contents of the tank are discharged by breaking the 
glass closure plates installed in the air inlet and outlet pipes by 
detonators fired by electric circuit connected to a switch in the cock- 
pit* The chemical filling flows from the tank by dynamic air pressure 
and gravity* 
The empty tank weighs approximately 125 pounds. Filled 
with DDT solution in #2 Diesel oil it weighs approximately 350 pounds. 
b. Standard U. S. 11-10 airplane smoke tanks were also used in 
the tests for purpose of comparison and evaluation with relation to 
results in disseminating DDT with the M-10 A.P.S.T, in AAF Board 
Project No. F-3486, entitled "Test to Determine the Host Practical 
Means of Disseminating Insecticide DDT from Aircraft." 
c. A-20G and A-26 aircraft were used in the tests. The 
British 500 lb, S.C.I. tank was modified for carrying on the wing racks 
of both types aircraft for the purpose of these tests* 
d* Insecticide DDT.- Pure DDT is a white crystalline substance, 
correctly named 2,2 - bis (p - chlorophenyl) 1.1.1, - trichlorethane. 
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e. 2jre.- Anthraquinone blue, AB base dye and DuPont oil red 
No. 5076 were used on this project. 
f. Solvent for DDT.- No. 2 diesel fuel oil was used as the 
solvent for DDT in 5% solution. On all tests with 10/o solution of 
DDT, 20,o W/v of Barrett's Heavy Solvent was used as an auxiliary 
solvent (Test No, 7 - Third Event excepted). 
g. For the purpose of these tests, and in the absence of 
appropriate British aircraft, for which the British 500 lb, S.C.I. 
was designed, subject tank was modified for carrying on the Viing racks 
of A-20G and A-26 aircraft. 
h. The tests under this project were conducted by AAF Tactical 
Center, Orlando, Florida, with the assistance of the Bureau of Ento- 
mology and Plant Quarantine of the U. S. Department of Agriculture, 
Orlando, Florida, and the Chemical Warfare Service, Dugway Proving 
Ground Lobile Unit, Bushnell, Florida. Tests under Events I and II 
were performed on Lake Hart near Orlando, Florida. All other tests 
were performed at the Chemical Warfare Demonstration Range, AFTAC, 
Orlando, Florida, 
III. CONCLUSIONS; It is concluded that 
a. The British 500 lb, S.C.I. (Smoke Curtain Installation) 
tank is a satisfactory unit for disseminating insecticide DDT from 
aircraft* 
b. The capacity of subject tank is 25 Imperial or 30 U, S* 
gallons, 
c. The time of discharge, rate of flew and approximate length 
of spray pattern of a single British 500 lb. S.C.I* tank, filled with 
25 Imperial or 30 U. S. gallons, of DDT solution in No. 2 Fuel Oil, 
discharged at an I.A.S. of 240 m.p.h. are as follows: 
British 
5a) lb. S. C. I. 
Time of Discharge - 16 seconds 
Hate of flow - 1.375 gallons/second 
Approximate Length of Pattern - 1880 yards 
d. The use of solutions of DDT in subject tank gave far 
better results than five percent solutions. Five percent solutions 
of DDT are, however, more practical for use in the field in that no 
auxiliary solvents are required. Ten percent solutions of DDT require 
the use of auxiliary solvents which are, at the present time, not 
available in most theatres. 
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e. Based on the above tests, the optimum altitude of spraying 
with subject tank filled with %o solutions of DDT in crosswinds of 
moderate velocities (2 to 11 m.p.h.) appears to'be approximately 150 
feet, Bith 10,B solutions of DDT satisfactory results were obtained by 
spraying from 50 to 300 feet in crosswinds of moderate velocity, 
f. The exact effective length of the pattern produced by a 
single British 500 lb. S.C.I. is not known on a basis of observed 
insect kill. Based on time of discharge and speed of aircraft, it is 
estimated to be approximately 1880 yards, 
g. The average effective width of the pattern produced under 
optimum conditions by the British 500 lb. S.C.I, was approximately 
200 yards. Based on this pattern width and the estimated length of 
1880 yards, a single British 500 lb, S.C.I. should, at normal operating 
speeds of approximately 200 m.p.h,, cover approximately 78 acres and 
effect a distribution of about 1,5 quarts per acre. 
IV. RECOllEhDATICNS: It is recommended that: 
a. For dissemination of solutions of DDT with the British 
S.C.I,, the contents be released at an approximate altitude of 150 
feet in crosswinds of moderate velocities (2 to 12 m.p.h.) at normal 
operating speeds. 
b. The distance between lines of flight for continuous treat- 
ment of an area by successive flights be not more than 200 yards and 
preferably about 175 yards. 
V. DISCUSSION: 
a., Methods of Testing,- (l) First invent.- This test was 
conducted by spraying parallel patterns on the surface of a lake from 
both the British S.C.I. and the U.S. lilO tanks for the purpose of 
obtaining a comparison of the patterns of spray from the two tanks. 
Spraying was done from an altitude of 25 feet at an I.A.S. of 240 
m.p.h. 
Although this procedure was repeated five times, no photo- 
graphs were obtained that could be considered satisfactory for 
evaluation. For this reason, the pattern length was approximated 
from the time of discharge of the tank. The estimated length of the 
patterns of the tanks are as follows: 
British S.C.I. 1800 yards 
U, S, 110 600 yards 
NOTE: At the time the above tests were being conducted, the mosquito 
population was inadequate to permit actual spray runs to determine 
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effective pattern length and facilities were not available to perndt 
use of entomological sample stations over the entire length of the 
spray pattern, 
(2) Second Event.- This test was conducted by spraying 
parallel patterns on the surface a lake from both the British S.C.I. 
and U. S, 110 tanks. Spraying was done at an altitude of 200 feet at 
an I.A.S, of 240 rn.p.h. No photographs were obtained that were satis- 
factory for the purpose of evaluation, 
(3) Third Event.— This test was conducted using mosouito 
larvae and flies. A range was laid out with parallel lines of stations, 
the lines being 200 yards apart. All stations on each line were fifty 
yards apart. At each station on line A was placed a container of 
mosquito larvae to determine percentage of kill; a petrie dish to obtain 
a deposit for subsequent laboratory testing for data on fly kill; a 
microscopic slide coated with magnesium oxide to obtain data on droplet 
size; and a round white enameled plate to obtain data on density of 
spray. In addition to the above, at each station on line 3 was placed 
a cage containing live flies, (See Incl. 5 and Photographs Nos, 5, 6 
and 7, Incl, 6), 
Leteorological equipment was set up to determine 
temperature, wind velocity, wind direction and relative humidity. 
(See Photograph 5* Incl. The flight path in all cases was cross- 
wind, approximately 90 to the two lines of stations. The DDT spray 
was carried by the wind and deposited in the area covered by the 
stations. The altitudes flown were 300 feet, 1$0 feet, and ‘)0 feet. 
These tests were conducted to determine the following: 
(a) Effective pattern width. 
(b) Percentage of fly kill, 
(c) Percentage of mosquito larvae kill, 
(d) Particle (droplet) size. 
(e) Quantity of DDT per square meter. 
Test No. 1.- This test was conducted at an altitude of 
three hundred (300) feet. The S.C.I. contained DDT in ff2 fuel oil. 
The most effective portion of the pattern varied from two hundred (2Q0) 
yards in width at line A to two hundred fifty (250) yards at line B. 
(a) Percentage of fly kill. 
Line A - Stations on line A did not contain flies 
in cages. On this line, petrie dishes were contaminated by DDT spray. 
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and flies were placed in these dishes in the laboratory. 100 i of flies 
exposed to dishes from stations if 1 to 11 were killed in eight (8) to 
twenty five (25) minutes after exposure, (Station if3 excepted) (See 
Incl. 8). 
Line B - Stations on line B contained both live 
flies in cages and petrie dishes. 100# of flies exposed to petrie 
dishes from stations #1 to 13 were killed in eleven (ll) to sixty six 
(66) minutes after exposure. The percentage of flies in cages that 
were killed varied from 17i to 100;£, (See Incl. 8), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill was 
highest at stations yl to 7. The kill varied from 25/S to 95% at these 
stations, (See Incl. 8), 
Line B - The percentage of mosouito larvae kill was 
best at stations #1 to 11, The kill varied from to 100/3 at these 
stations, (See Incl, 8). 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from two 
hundred eighty-two (282) microns at stations #3 to six hundred fifty 
(650) microns at station #9. The size of practically all particles 
recorded varied from two hundred (200) to eight hundred (800) microns, 
(See Incl, 8), 
Line B - Data on particle size is not available for 
'..his line of stations, 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per square 
meter varied from 1,1 mg to 4,2 mg. This was from stations #1 to 11 
inclusive, with the heaviest deposit of DDT at stations #3* (See Incl.9) 
Line 3 - The number of milligrams of DDT per square 
meter varied from 3*3 mg to 9,3 mg. This was from stations #1 to 11 
inclusive, with the heaviest deposit at station #5. (See Incl, 9). 
Test No. 2,- This test was conducted at an altitude of 
i ; ree hundred (300) feet, S.C.I. contained 5% DDT in No, 2 fuel oil, 
e most effective portion of the pattern was less than fifty (50) 
.rds wide at Line A and fifty (50) .yards wide at Line B. 
(a) Percentage of fly kill. 
Line A - Stations on line A did not contain flies 
mo cages. On this line, netrie dishes were contaminated by DDT spray, 
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and flies were placed in these dishes in the laboratory, 100.6 of flies 
exposed to dishes from stations No. 1 to 3 were killed in 26 to 97 
minutes, (See Incl, 8), 
Line D - Stations on Line B contained both live flies 
in cages and petrie dishes, 100$ of flies exposed to petrie dishes 
were not killed in less than 240 minutes, except at station No. 5 
where 90,6 were killed in 122 minutes. The percentage of flies in cages 
that were killed was less than 45$ at all stations (See Incl, 8). 
(b) Percentage of mosauito larvae kill. 
Line A - The percentage of mosquito larvae kill was high 
at station No. 7 only, (90,0, (See Incl. 8). 
Line B- The percentage of mosquito larvae kill was 
high at stations No. 1 (100$) and No. 3 (90$), At all other stations, 
the kill was less than 66$. (See Incl, 8), 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from 242 
microns at station No. 1 to 132 microns at station No. 9. The size of 
all particles recorded was below 400 microns, (See Incl. 8). 
Line B - Particle size in microns varied from 220 microns 
to 110 microns. The size of all particles recorded was below 400 
microns, (See Incl. 8), 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per square 
meter varied from 0,2 to 11,1 mg. This was from stations No. 1 to 15 
inclusive, with the heaviest deposit at station No, 1, (See Incl. 9). 
Line B - The number of milligrams of DDT per square 
meter varied from 0,2 to 1,0 mg. This was from stations No, 1 to 15 
inclusive, with the heaviest deposit at station (See Incl. 9). 
Test No. 3.- This test was conducted at an altitude of 300 
feet. The S.C.I. contained 10$ DDT in No. 2 fuel oil with 20$ Barrett’s 
Heavy Solvent added as an auxiliary solvent. The most effective portion 
of the pattern was between 150 and 250 yards wide at Line a and between 
200 and 300 yards wide at Line B. 
(a) Percentage of Fly Kill. 
Line A - Stations on Line A did not contain flies in 
cages. On this line, petrie dishes were contaminated by DDT spray, 
and flies were placed in these dishes in the'laboratory. 100$ of flies 
exposed to dishes from stations No, 5 to 17 were killed in 2o to 123 
minutes. (See Incl, 8), 
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Line B - Stations on Line B contained both live 
flies in cages and petrie dishes. 1005 of flies exposed to dishes 
from stations to 17 were killed in 12 to 50 minutes. Trie percentage 
of flies in cages that were killed varied from 935 to 985 at stations 
Mo, 5 to 1? with 85,5 kill at station No. 9* (See Incl, 8), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill 
was highest at stations :fl to 7* 100$ kill recorded at stations 1 to 
5 and 90$ kill at Mo. 7. (See Incl, 8), 
Line B - The percentage of mosquito larvae kill 
was highest at stations Mo, 5 to 11, 905 to 1005 kill recorded with 
755 kill at No. 9. (See Incl. 8), 
(c) Particle (Droplet) size. 
Line a - Particle size in microns varied from 154 
microns at station No. 11 to 418 microns at station No. 13. All 
particles recorded were below 419 microns, (See Incl. 8). 
Line B - Particle size in microns varied from 418 
microns at station Mo. 11 to 528 microns at station Mo. 15* All 
particles recorded were below 800 microns, (See Incl, 8). 
(d) Hilligrams of DDT Per Souare Heter, 
Line A - The number of milligrams of DDT per 
square meter varied from 1.9 to 82,8 mg. This was from station No, 1 
to 17 inclusive, with the heaviest deposit at station No. 17, (See 
Incl. 9). 
Line B - The number of mill grams of DD1 per 
souare meter varied from 0.7 mg to 9*9 mg. This was from station No, 
1 to 17 inclusive with the heaviest deposit at station No. 11, (See 
Incl. 9). 
Test No, 4.- This test was conducted at an altitude 
of 300 feet. The S.C.I. contained 105 DDT in jf2 fuel oil with 205 
Barrett’s heavy solvent added as an auxiliary solvent. The most 
effective* portion of the pattern was 350 yards wide at line A and 
between 150 and 300 yards vide at line B. 
(a) Percentage of fly kill. 
Line A ~ Stations on line A did not contain flies 
in cages. On this line, petrie dishes were contaminated by DDT spray, 
and flies were placed in these dishes in the laboratory, 1005 of flies 
exposed to dishes from stations 1 to 17 were killed in 10 to 25 
minutes, (See Incl. 8), 
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Line B - Stations on line B contained both live 
flies in cages and petrie dishes. 100$ of flies exposed to dishes 
from stations No. 1 to 1? were killed in 12 to 31 minutes. The 
percentage of flies in cages that were killed was 100$ from stations 
No, 5 to 1? inclusive. (See Incl, 8), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill was 
100$ at stations No. 5 to 17 inclusive with 90$ kill at No, 3« (See 
Incl. 8), 
Line B - The percentage of mosquito larvae kill was 
100$ from station No, 11 to 17 inclusive with 85$ kill at No. 5 and 7* 
(See Incl. 8). 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from 242 
microns at station No. 15 to 330 microns at station No. 7 to 13. 100$ 
of all droplets recorded were below 800 microns. (See Incl. 8), 
Line B - Particle size in microns varied from 132 
microns at stations No, 17 to 220 microns at station No. 7 and 15. 
100$ of all particles recorded were below 800 microns. (See Incl. 8), 
(d) Milligrams of DDT per Square Meter. 
Line A - The number of milligrams of DDT per square 
meter varied from 1,4 mg to 56.9 mg# This was from station No. 1 to 
17 inclusive, with the heaviest deposit at station No, 15. (See Incl, 9). 
Line B - The number of milligrams of DDT per square 
meter varied from 4«4 mg to 38.1 mg. This was from station No, 1 to 17 
inclusive, with the heaviest deposit at station No, 15. (See Incl. 9)« 
Test No. 5.- This test was conducted at an altitude of 
one hundred fifty (150)feet, S.C.I. contained 5$ DDT in No. 2 fuel 
oil. The most effective portion of the pattern was two hundred fifty 
(250) yards wide on both lines A and B. 
(a) Percentage of fly kill. 
Line A - Stations on line A did not contain flies 
in cages. On this line, petrie dishes were contaminated by DDT spray, 
and flies were placed in these dishes in the laboratory, 100$ of flies 
exposed to dishes from stations #3 to 11 were killed in fifteen (15) 
to fifty-one (51) minutes, with 100$ kill at station #1 in one hundred 
forty-two (142) minutes, (See Incl. 8). 
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Line E - Stations on line B contained both live 
flies in cages and petrie dishes. 100,o of flies exposed to petrie 
dishes from stations if3 to 9 were killed in seventeen (1?) to twenty- 
five (25) minutes with kill in excess of in two hundred forty (240) 
nd.nutes at station ffl. The percentages of flies in cages that were 
killed varied from 97% to 100/6 from stations #1 to 11 inclusive, (See 
Incl. 8), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill was 
highest at stations ,fl, 3, 9, and 11, The kill at these stations 
varied from 60% to 100%, At station ft3 the kill was only 13% and at 
stations #7 the kill was only (See Incl. B), 
Line B - The percentage of mosquito larvae kill was 
highest at stations ffl to 11, The kill varied from 70% to 100;d at 
these stations. There was a kill at station #13* (See Incl, 8), 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from two 
hundred sixty (260) macrons at station #3 to four hundred twelve (4I2) 
microns at station #9* (See Incl. 8), The size of practically all 
particles recorded was below six hundred (600) microns, (See Incl, 8), 
Line B - Particle size in microns varied from one 
hundred fifty-two (152) microns at station ft1 to eight hundred sixty- 
eight (868) at station #7* The size of practically all particles 
recorded varied from two hundred (200) to eight hundred (800) microns, 
(See Incl, 8), 
(d) Milligrams of DDT per Square Meter, 
Line A - The number of milligrams of DDT per square 
meter varied from 0,3 mg to 8,3 mg. This was from stations #1 to 11 
inclusive, with the heaviest deposit at station #9* (See Incl, 9). 
Line B - The number of milligrams of DDT per square 
meter varied from 4«>7 mg, to 14*2 mg. This was from stations #1 to 13 
inclusive, with the heaviest deposit at station #11, (See Incl. 9). 
Test No. 6.— This test was conducted at an altitude of 
150 feet. The S.C.I, contained 3% DDT in No, 2 fuel oil. The most 
effective portion of the pattern was between 200 and 250 yards wide at 
Line A and 300 yards wide at Line B for larvae but considerably less 
for flies in cages, 
(a) Percentage of fly kill. 
Line A - Stations on line A did not contain flies 
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in cages* On this line., petrie cljshes were contaminated by D'JT spray, 
and flies were placed in these dishes in the laboratory. 100,a of flies 
exposed to dishes from stations No. 1 to 11 were killed in 14 to 47 
minutes, (See Incl, 8). 
Line B - Stations on line 3 contained both live 
flies in cages and petrie dishes, 100/o of flies exposed to dishes 
from stations No. 1 to 11 were killed in 14 to 47 minutes„ (See Incl.8)* 
Line 3 - Stations on line B contained both live 
flies in cages and petrie dishes* 100,o of flies exposed to dishes 
from stations No, 1 to 11 were killed in 12 to 85 minutes, station No, 
9 excepted, of flies in cages were killed at station No, 1 only* 
(See Incl, 8), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill was 
100/o at stations No. 1 to 5 inclusive, and 90;q kill at stations No. 9, 
11, and 17* 
Line 3 - The percentage of mosquito larvae kill was 
at stations No, 1 to 13 inclusive, (See Incl. 8), 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from 132 
microns at station No, 15 to 440 microns at station No. 1. All 
particles recorded were below BOO microns and most were below 600 
microns* (See Incl. 8), 
Line B - Particle size in microns varied from 110 
microns at station No, 7 to 286 microns at station No. 3* All particles 
recorded were below 400 microns, (See Incl, 8), 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per square 
meter varied from 1,0 rag to 36,9 mg. This was from station No. 1 to 
17 inclusive, with the heaviest deposit at station No. 3« (See Incl, 9)* 
Line B - The number of milligrams of DDT per square 
meter varied from 0*3 mg to 43*1 mg. This was from station No. 1 to 17 
inclusive, with the heaviest deposit at station No. 1 (See Incl, 9)* 
Test No. 7.- Tliis test was conducted at an altitude of 
one hundred fifty (150) feet. The S.C.I. contained 10,j DDT in No. 2 
fuel oil. The most effective portion of the pattern was two hundred 
(200) yards wide at both lines A and 3 (See Incl. 8), 
(a) Percent,age of fly kill. 
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Line A - Stations on line A did not contain 
flies in cages. On this line, petrie dishes were contaminated by DDT 
spray, and flies were placed in these dishes in the laboratory* 100$ 
of flies exposed to dishes from stations ffl to 11 were killed in nine 
(9) to one hundred thirteen (113/ minutes, (See Incl. 8). 
Line B - Stations on line B contained both 
live flies in cages and petrie dishes, 100$ of flies exposed to dishes 
from stations ffl to 9 were killed in eight (8) to seventy-nine (79) 
minutes. The percentage of flies in cages that were killed was 100$ 
at stations ffl to 7 inclusive, with 11$ kill at station §9. (See Incl,8), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill 
was highest at stations ffl to 9. The kill at these stations varied 
from 75$ to 100$• (See Incl. 8). 
Line B - The percentage of mosquito larvae kill 
was highest at stations #1 to 9* The kill at these stations varied 
from 95% to 100$ with 35% kill at station fr9, (See Incl. 8), 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from 
one hundred fifty-two microns at station ft5 to four hundred thirty-four 
(434) microns at station #1. All particles recprded were below four 
hundred fifty (450) microns, (See Incl, 8). 
Line B - Particle size in microns varied from 
one hundred fifty-two (152) microns at station #7 to six hundred fifty 
(65O) microns at station ft 1. All particles recorded were below six 
hundred fifty-one (65I) microns, (See Incl. 8). 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per 
square meter varied from 1*2 mg to 97 mg. This was from stations #1 
to 17 inclusive, with the heaviest deposit at station #1, (See Incl. 9)# 
Line B - The number of milligrams of DDT per 
square meter varied from 0,3 mg to 50,9 mg* This was from stations #1 
to 17 inclusive, with the heaviest deposit at station #3. (See Incl, 9)» 
Test No. 8.— This test was conducted at an altitude 
of 150 feet. The S.C.I. contained 10$ DDT in #2 fuel oil with 20$ 
Barrett’s Heavy Solvent added as an auxiliary solvent. The wind 
direction shifted 90° at the time of the spray run and consequently the 
DDT spray was carried back along the length of the flight path and very 
little was deposited on the stations. (See Incl, 8). 
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Test No. 9*~ This test was conducted at an altitude of 
150 feet. The S.C.I. contained 10$ DDT in ff2 fuel oil with 20$ 
Barrett’s Heavy Solvent, added as an auxiliary solvent. The most 
effective portion of the pattern was at stations No. 11, 13, and 17 
on line A, and negligible on line B, On this run, the forward detonator 
did not fire and the S.C.I. tank trickled DOT solution for a considerable 
length of time as compared to the normal time of discharge. (See Incl. 
B). 
Test No. 10»- This test was conducted at an altitude 
of 50 feet. The S.C.I. contained 5$ DDT in No. 2 diesel fuel oil. 
The most effective portion of the pattern was not more than $0 yards 
wide at line A and the same on line B» 
(a) Percentage of fly kill. 
Line A - 100$ of flies exposed to petrie dishes 
from station No. 3 were killed in 102 minutes. (See Incl. 8), 
Line B - 100$ of flies exposed to petrie dishes 
were killed in 55 minutes at station No. 1 and 53 minutes at No, 3. 
The percentage of fliers in cages that were killed was 100$ at 
station No, 1. (See Incl, 8). 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill 
was 95$ at station No, 3. (See Incl, 8). 
Line B - The percentage of mosquito larvae kill 
was 95$ at station No, 1, (See Incl, 8). 
(c) Particle (Droplet) size,- Not enough particles 
were recorded to give any indication of particle size on this test. 
(See Incl. 8), 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per 
square meter was very low and varied from 0.2 mg to 1,0 mg, (See 
Incl. 9). 
Line B - The number of milligrams of DDT per 
square meter was very low and varied from 0,2 mg to 1.1 mg. (See 
Incl. 9)* 
Test No. 11.— This test was conducted at an altitude 
of 50 feet. The S.C.I. contained 5$ DDT in no, 2 diesel fuel oil. 
The most effective portion of the pattern was 50 yards wide on line A 
and the same on line B, 
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(a) Percentage of fly kill. 
Line A - 100# of flies exposed to petrie dishes 
were killed in 9 minutes at station No. 1 and 20 minutes at station 
No. 3* (See Incl. 8), 
Line B - 100# of flies exposed to petrie dishes 
were killed in 28 minutes at station No. 1 and 110 minutes at station 
No. 3* The percentage of flies in cages that were killed was below 
90,o at all stations, (See Incl, S), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill 
was 95# at station No, 1 and 5* (See Incl, 8). 
Line B - The percentage of mosquito larvae kill 
was lOOi at stations No. 1 and 3 with 90# kill at station No. 7t (See 
Incl. 8). 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from 
198 microns at station No. 1 to 66 microns at station No, 9* The size 
of all particles recorded was below 400 microns, (See Incl. 8), 
Line 3 - Particle size in microns varied from 132 
microns at station No, 1 to 88 microns at station No* 3* The size of 
all particles recorded was below 200 microns, (See Incl. 8)„ 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per square 
meter varied from 0.3 mg to 21.3 mg. This was from station No. 1 to 
15 inclusive, with the heaviest deposit at station No. 1. (See Incl, 9)* 
Line B ~ The number of milligrams of DDT per 
square meter varied from 0.3 mg to 3*5 mg. This was from station No. 
1 to I? inclusive, with the heaviest deposit at station No. 1 (See 
Incl. 9). 
Test No. 12.— This test was conducted at an altitude 
of 50 feet. The S.C.I, contained 10# DDT in No. 2 diesel fuel oil 
with 20# Barrett’s Heavy Solvent added as an auxiliary solvent. The 
most effective portion of the pattern was 100 yards wide at both line 
A and 100 yards wide on line B. 
(a) Percentage of fly kill. 
Line A - 100# of flies exposed to petrie dishes 
were killed in 19 to 96 minutes. This was from stations no, 1 to 17 
14 
RESTRICTED RESTRICTED 
inclusive# (See Incl# 8). 
Line B - 100$ of flies exposed to petrie dishes 
were killed in 22 to 108 minutes at stations No, 11 to 17 inclusive# 
100$ of flies in cages were killed at stations No. 13 to 17 inclusive# 
(See Incl. 8), 
(b) Percentage of mosouito larvae kill. 
Line A - The percentage of mosquito larvae kill 
was 100$ at stations No. 1, 5,» and 13, and 15, with 95$ kill at 
stations No, 3 and 17* (See Incl, 8)# 
Line 3 - The percentage of moscuito larvae kill was 
100$ at stations No. 15 and 17 with 90$ kill at station No, ,13, (See 
Incl. 3). 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from 154 
microns at station No. 3 to 264 microns at station No, 13. The size 
of all particles recorded was below 400 microns. (See Incl. 8), 
Line B - Particle size in microns varied from 88 
microns at station No. 9 to 332 microns at station No. 17, The size 
of all particles recorded was below 600 microns, (See Incl. 8), 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per sruare 
meter varied from 0,2 mg to 3*3 rag, This was from stations No, 1 to 
17 inclusive, with the heaviest deposit at station No. 1 and 15. (See 
Incl. 9). 
Line B - The number of milligrams of DDT per souare 
meter varied from 1,2 mg to 37.8 rag. This was from station No, 1 to 
17 inclusive, with the heaviest deposit at station No. 17. (See Incl. 
9). 
Test No. 13.- This test was conducted at an altitude of 
50 feet. The S.C.I. contained 10$ DDT in No, 2 diesel fuel oil with 
20$ Barrettfs Heavy Solvent added as an auxiliary solvent. The most 
effective portion of the pattern was 200 yards wide at line A and 250 
to 300 yards wide on line B. 
(a) Percentage of fly kill. 
Line A - 100$ of flies exposed to petri dishes were 
killed in 11 to 64 minutes. This was from station No, 7 to 17 
inclusive, (See Incl, 8), 
Line B - 100$ of flies exposed to petri dishes were 
killed in 10 to 100 minutes. This was from station No, 1 to 17 
RESi kilTED RESTRICTED 
inclusive. (See Incl, 8). 100$ of flies in cages were killed from 
station No. 7 to 17* (See Incl, 8), 
(b) Percentage of mosquito larvae kill. 
Line A - The percentage of mosquito larvae kill 
was 100$ at station ho. 11, 15, and 17 with 95$ kill at station No, 9 
and 13. (See Incl, 8), 
Line B - The percentage of mosquito larvae kill 
was 100$ at stations No. 7 to 17 excepting 11 where the kill was 70$, 
The kill was 90$ at station No, 5« (See Incl. 8), 
(c) Particle (Droplet) size. 
Line A - Particle size in microns varied from 154 
microns at station No. 5 to 374 microns at station No, 11, The size 
of all particles recorded was below 600 microns, (See Incl, 8), 
Line B - Particle size in microns varied from 132 
macrons at station No, 3 and 13, to 352 microns at station No. 17, The 
size of all particles recorded was below 600 microns, (See Incl, 8)« 
(d) Milligrams of DDT per square meter. 
Line A - The number of milligrams of DDT per square 
meter varied from 0,7 mg to 76,0 mg. This was from station No, 1 to 
17 (No, 3 excepted), with the greatest deposit at station No, 17. (See 
Incl, 9). 
Line B - The number of milligrams of DDT per square 
meter varied from 2.3 mg to 61,4 mg. This was from station No, 1 to 
17 inclusive, with the greatest deposit at station No. 17. (See Incl, 9). 
FOR THE ARMY AIR FORCES BOARD; 
A. C. STRICKLAND 
Brigadier General, U, S. Army- 
President 
OFFICIAL: 
yy GUSTAV A. NEUBERG / 
jr / Lt* Colonel, AGD S 
/ / Recorder / 
RESTRICTED RESTRICTED 
DIRECTIVE FOR PROJECT 
17 
RESTRICTED RESTRICTED 
HEADQUARTERS ARMY AIR FORCES 
WASHINGTON 25, D, C. 
AFRBD-lr 
6 July 1944 
SUBJECT: Conductance of D.D.T. Tests for the British Air Commission 
TO; President, Army Air Forces Board 
Orlando, Florida 
1. The British Air Commission has requested this Headquarters to 
authorize the AAF Board to conduct limited tests to determine, in con- 
junction with project (H-5)212, the most practical means of disseminating 
insecticides D.D.T. from aircraft using standard British equipment. 
2. The British Air Commission is in a position to furnish without 
delay six 500 lb. S.C.I.'s, type S/G and a quantity of fifty each inlet 
and outlet discs and detonators. Also, if required, they may be able 
to furnish a Vengeance airplane (A-35B) fitted with British Universal 
bomb racks to take the 500 lb. S.C.I.’s. 
3. It is requested that the AAF Board conduct such tests as nec- 
essary to determine the practicability of employing British standard 
aircraft and equipment as means of disseminating insecticide D.D.T, for 
area insect control. Those tests which require depot modification of 
equipment will not be undertaken, 
4. Coordinating details may be handled between the R.A.F, liaison 
officer, AFTAG and W/C R. Hazlewood, British Air Commission, Washington 
6, D.C. (Telephone - Decator 9000, extension 63). 
By command of General ARNOLD; 
/s/ William F. McKee 
WILLIAM F. McKEE 
Colonel, Air Corps 
Deputy Asst. Chief of Air Staff 
Operations, Commitments & 
Requirements 
RESTRICTED RESTRICTED 
TEST PROGRAM 
RESTRICTED RESTRICTED 
TEST PROGRAM FOR ARMY AIR FORCES BOARD PROJECT F3735 
1. GENERAL 
a. British S.C.I, (Smoke Curtain Installation) tank is a 
twenty-five (25) imperial gallon bomb bay tank. For the purpose of 
this project, the 3,C.I. is to be modified for carrying on wing racks. 
It weighs approximately five hundred (500) pounds filled, armed, and 
mounted. The outstanding differences between this tank and the M10 
APST are: The air inlet and the outlet are smaller than that of the 
L0.0 APST, In addition the S.C.I. normally has only one carrier lug and 
has to be modified to be carried on A-20 type aircraft, 
b. This is a SECOND PRIORITY experimental test, 
c. The following materials are required for this test: 
495 gallons - #2 diesel oil in 55 gallon drums. 
25 pounds - Anthraquinoneblue AB base (dye). 
8 each - Pots, smoke, HC, Ml. 
24 each - No. 4, electric blasting caps, 4 
to 6 foot leads, 
24 each - Air inlet closure plates for M10 
smoke tanks, 
48 each - Air inlet gaskets for ICLO smoke tanks, 
24 each - Discharge closure plates for M10 
smoke tanks, 
48 each - Discharge gaskets for M10 smoke tanks. 
4 each - M10 smoke tanks. 
The above requirements are necessary in order to cover all 
necessary tests, 
d. This test has been requested by 1st Ind. Army Air Forces 
Board, Orlando, Florida, dated 12 July 1944> to Commanding General, 
Army Air Forces Tactical Center, Orlando, Florida, 
e. The project officer is 1st Lt. Sterling R, Forney, 901st 
AAF Base Unit (Tactical Wing), Assistant Chief, Chemical Warfare Branch, 
2. OBJECT: To determine practicability of employing British 
standard equipment as a means of disseminating Insecticide D, D, T, 
for area insect control, 
3. METHOD OF CONDUCTING TEST; 
a. Phases 
(T) Preliminary 
(a) Test area - A lake of sufficient size and shape 
RESTRICTED RESTRICTED 
to permit laying, observing, and photographing 
spray patterns required, A minimum area 1,000 
yards long by 300 yards wide should be allowed 
for each pattern. 
(b) Filling, handling, and hanging of spray tanks 
will be performed by Chemical Warfare Service 
troops. Appropriate personnel will also be 
needed for weather reporting, photographing, 
observation, and other ground work at target, 
(c) The following oil will be usee in tests: No, 2 
diesel oil comparable to that used in tests on 
AAF Board Project (M-5) 212, See F-3486. 
(d) British S.C.I.*s to be furnished by British Air 
Commission. Tanks will be mounted and flight 
tested on A-20G aircraft by AFTAG, 
(e) General Airplane requirements: 
One (1) A-20G airplane for laying spray. 
One (1) photographic and observation airplane 
equipped for taking photographs to scale. NOTE: 
Services of same airplanes and crews will be 
furnished for all tests if possible, 
(2) Main 
(a) Event 1 - Comparative test of distribution 
patterns of S.C.I, and M10 smoke tanks, 
1, Two (2) crosswind spray patterns each with 
#2 diesel oil from one (1) British S.C.I, 
released at minimum altitude. (2$ feet over 
water) 
2. Two (2) crosswind spray patterns each with 
#2 diesel oil from one (1) M10 tank released 
from minimum altitude, (25 feet over water) 
2* Missions 1 and 2 to be run under same wind 
conditions and photographed at the same time, 
(b) Event 2, 
1, Two crosswind spray patterns each with #2 
“ diesel oil, from 200 feet altitude over water, 
from one (1) British S.C.I, 
2, Two crosswind spray patterns each with #2 
~ diesel oil, from one (1) M10 tank released 
RESTRICTED RESTRICTED 
from 200 feet altitude over water* 
2* Missions 1 and 2 to be run under same wind 
conditions and photographed at same time, 
(c) Event 3 - Entomological and Physical Determinations, 
1, Two (2) single tank releases of 5% DDT solu- 
tions over the target area at an altitude of 
50 feet, operational speed cross wind, with 
wind velocity of between 3 and 10 m,p,h, 
2, Two (2) single tank releases of 10% DDT solu- 
tion over the target area at an altitude of 50 
feet, operational speed cross wind, with wind 
velocity of between 3 and 10 m.p.h. 
2* Two (2) single tank releases of 5% DDT solu- 
tion over the target area at an altitude of 
150 feet, operational speed cross wind, with 
wind velocity of between 3 and 10 m.p.h. 
Two (2) single tank releases of 10% DDT solu- 
tion over the target area at an altitude of 
150 feet, operational speed cross wind, with 
wind velocity of between 3 and 10 m.p.h, 
2* Two (2) single tank releases of 5% DDT solu- 
tion over the target area at an altitude of 
300 feet, operational speed cross wind, with 
wind velocity of between 3 and 10 m.p.h, 
6. Two (2) single tank releases of 10% DDT solu- 
tion over the target area at an altitude of 
300 feet, operational speed cross wind, with 
wind velocity of between 3 and 10 m.p.h, 
b. From the above tests, the following observations will be 
made and the following compiled: 
(1) Percentage of fly kill at each station, 
(2) Percentage of mosquito larvae kill at each station, 
(3) Percentage of particle (droplets) size at each station, 
(4) Density (quantity of DDT per square meter at each 
station). 
(5) ctive pattern width at each altitude and with each 
type of DDT solution. 
RESTRICTED RESTRICTED 
(6) Time and rate of discharge for each tank release. From 
the time and rate of discharge, an estimate of the 
pattern length will be given. 
NOTES; 
1, Comparative releases of M10 and S,C,I,fs to be made at same time 
and under same conditions. Two comparative releases under each condition 
are provided to allow average. 
2, Each pattern must be photographed immediately (30 to 60 seconds) 
after application to prevent distortion of pattern by water movement. 
Photographs must be made accurately to scale. 
3, Meteorological data must be carefully measured and recorded on 
each mission. Wind should be 4 to 10 M.P.H, 
4* Facility of filling, handling, arming, and general functioning 
of the British S,C.I,!s as compared to the M10 airplane smoke tank will 
be carefully observed in all operations and on all missions. The.nature 
and cause of all difficulties and malfunctions will be carefully recorded. 
5* A conference of participating personnel as designated by the 
Project Officer will be held prior to the beginning of the tests, in 
order to thoroughly acquaint all personnel with the objective, methods 
to be followed, and their respective responsibilities, 
6. Participating personnel will be carefully briefed before each 
mission, 
7* Close liaison will be maintained throughout the test between 
the Project Officer, AFTAC; the Project Officer, AAF Board; the Project 
Officer, 901st AAF Base Unit (Tactical Wing); the British Liaison Officer, 
and other participating personnel. At the conclusion of the test a 
conference of al 1 the above mentioned personnel will be held for the 
purpose of compiling, analyzing, and evaluating the data obtained from 
the test, 
8. Any or all of the aforementioned missions may be repeated if 
necessary, and at the discretion of the Project Officer, 
RECORDS: 
1, Forms and records to be used will be prescribed and issued by 
the Project Officer to pertinent personnel, 
2. Other data on each mission will include wind speed, wind direc- 
tion, temperature, humidity, time of day, and general weather character- 
istics. 
3# Air planes and Air Operations. - Type airplane used, altitude. 
RESTRICTED RESTRICTED 
air speed, and direction of flight in degrees with respect to direction 
of wind (all missions will be flown as near as possible to 90° with the 
wind direction or crosswind). 
4. Chemical Tanks. - Type and size, amount and type filling, number 
position on airplane, failures, general performance, time of discharge, 
weight and amount of residue left in tanks after mission,character of 
spray at release and end points. 
5. Filling. Handling, and Aiming Operations, - Procedure, facility 
and time required for filling, handling and arming the test tank compared 
to the M10 AF5T will be carefully noted and recorded. Any difficulties 
in these operations will be recorded, 
6, Target, - Description, condition at time of mission, extent, 
size, and shape of pattern, 
7, Chemical Agent. - Description, weight and amount per tank, 
specific gravity, 
EVALUATION OF DATA AND REPORTS: 
All data collected, records, tabulations, analyses, computations, 
methods, evaluations, etc., will be placed in the report form prescribed 
by the AAF Board and will be submitted in triplicate to the AAF Board 
upon completion of the tests. 
RESTRICTED RESTRICTED 
DATA ON MODIFICATION OF BRITISH 500 LB. S.G.I. 
25 
RESTRICTED RESTRICTED 
OFFICE OF THE ARMAMENT OFFICER 
SQUADRON L BOMB (L) 904th AAF BASE UNIT (FIGHTER) VHL/E/l 
KISSILT1EE ARM! AIR FIELD 
KISSIMMEE FLORIDA 
12 January 1945 
SUBJECT: Modification of British chemical Tank - 500# for Adaption to 
U.S, Army Air Corps Wing Racks* 
TO : Project Officer, Squadron L, 904th AAF Base unit, Kissimmee 
Army Air Field, Kissimmee, Florida, 
A. Following are the modifications necessary to adapt the British 
Chemical Tank - 500# to be carried externally on U,B. Army Air 
Corps wing racks; 
1, Remove rubber insullating covers from tanks. 
2, Have carrying bands and carrying lugs manufactured to fit 
tank body. 
3, Install front band against forward side of loading attach- 
ment, and rear band 14 inches (center to center; to rear 
of front band, 
4, Have sway bolts manufactured 5/B" x 5” and threaded approx- 
imately 3 inches. 
5# The loading attachment on tink will not allow the carrying 
lugs to be as close to tank as desired, leaving a distance 
of approximately 2gn to 3n between top of tank and bottom 
of rack, thus longer sway bolts have to be used. 
/s/ V.H. La May, 
V.H. LA MAY, 
2nd Lt,, Air Corps, 
Armament Officer, 
CERTIFIED A TRUE COPY 
/s/ Sterling R. Forney, 
STEIiLING R. FORNEY, 
Capt, CWS, 
Asst Chief, Chem War Br. 
Indc 3 
RESTRICTED RESTRICTED 
DATA ON FIRST AND SECOND EVENT TESTS 
27 
RESTRICTED RESTRICTED 
DATS - 25 November 1944. 
Run No. 
Tank Used 
Wind Velocity 
Wind Direction 
Temperature 
Humidity 
Results on Photographs 
1 
SCI 
4 MPH 
o 
o 
60.26 
7i~ 
No result obtained. 
2 
M10 
5 MPH 
70° 
63° 
71 
Result on first take 
gave pattern length, 
but width could not 
be determined. Taken 
13 seconds after 
spraying. 
3 
SCI 
5 MPH 
70° 
66.8° 
69 
Photographs good on 
first take, approxi- 
mately 23 seconds 
after spraying. 
DATS - 9 
December 1944. 
Run No. 
Tank Used 
Wind Velocity 
Wind Direction 
temperature 
Humidity 
Results on Photographs 
1 
SCI 
6 MPH 
360° 
52° 
09 
»-*No result obtained. 
2 
mo 
4 MPH 
360° 
52.5° 
88 
** No result obtained. 
3 
SCI 
5 MPH 
360° 
52.5° 
86 
*-*No result obtained. 
*4 
mo 
* lfl.0 tank did not release 
** Patterns did not show on photographs. 
FIRST EVENT - FIRST MISSION 
FIRST EVENT - SECOND MISSION 
RESTRICTED RESTRICTED 
DATE - L 
h. December 1944. 
Run No. 
Tank Used 
Wind Velocity 
Wind Direction 
Temperature 
Humidity 
Results on Photographs 
1 
SCI 
5 MPH 
3300 
52° 
~4T" 
No result obtained on 
first take. Very faint 
pattern on second take. 
Outline not clear. 
Second take approx, 4 
min. after spraying. 
2 
jao 
6.5 MPH 
3100 
51° 
45 
Negligable result be- 
lieved due to turbul- 
ence over water. 
DATi!I - 14 December 1944# 
Run No* 
Tank Used 
Wind Velocity 
Wind Direction 
Temperature 
Humidity 
Results on Photographs 
1 
SCI 
8 MFH 
280° 
52° 
46 
Very poor results ob- 
tained on photographs. 
No definite pattern when 
photographed 34 sec. 
after spraying. 
2 
mo 
8 MPH 
300d 
52° 
45 
No definite pattern 
obtained on photographs. 
FIRST STONI - THIRD MISSION 
SauONL) - FIRST mss ION 
RESTRICTED RESTRICTED 
Di\T£ - 20 
December 1944. 
Hun No. 
Tank Used 
Wind Velocity 
Wind Direction 
Temperature 
Humidity 
Results on Photographs 
1 
SCI 
3 MPH 
0° 
55° 
70 
Result of photo pat- 
tern was fair. Faint 
outline obtained giv- 
ing width, but length 
could not be deter- 
mined. Photographed 
42 seconds after spray- 
ing. 
2 
iao 
3 MPH 
OO 
55° 
70 
Result of photo pat- 
tern was fair. Paint 
outline obtained giv- 
ing width, but only 
approximate length* 
Photographed 36 sec- 
onds after spraying. 
FlKsT - FOURTH MISSION 
RESTRICTED RESTRICTED 
DIAGRAM OF RANGE LAYOUT FOR THIRD EVENT TESTS 
31 
RESTRICTED RESTRICTED 
Stands 
RANGE LAYOUT - THIRD EVENT 
Center 
Numbers Indicate Stations 
.POL. ; 
Diagram of Entomological Range Layout. 
RESTRICTED RESTRICTED 
INCLOSURE NO. 6 
Photographs 
RESTRICTED RESTRICTED 
Photos Nos, 1, 2, 3 and 4 
British 500-lb, S.C.I. and U.S. M-10 APST 
Installed on A-20-G Wing hack. 
RESTRICTED RESTRICTED 
RESTRICTED RESTRICTED 
RESTRICTED RESTRICTED 
RESTRICTED RESTRICTED 
- 'V _ 
- - 
RESTRICTED RESTRICTED 
INCL, 6 
Photo No, 5 
Layout of Meteorological Station, 
39 
RESTRICTED RESTRICTED 
INCL. 6 
Photo No. 6 
Entomological and Physical Sampling Station Showing Petrie Dish, 
Fly Gage, Larvae Container and MgO Slide, 
RESTRICTED RESTRICTED 
INCL. 6 
Photo No. 7 
Sample Dish Showing Distribution of Spray Particles* 
RESTRICTED RESTRICTED 
BJCL, 6 
Photo No, & 
A-20-G Spraying DDT Solution with British 500-lb, S,C,I# 
RESTRICTED RESTRICTED 
METEOROLOGICAL DATA FOR THIRD EVENT TESTS 
RESTRICTED RESTRICTED 
REGIONAL control office 
26Til .'iEj'iTilER REGION 
A*J’’ TACTICAL CENTER 
Orlando, Florida 
EHB/RDC /dm-Y 
Ip Reply 
Refer to; 
13 January 1945 
Subjects I'eteorological Data for AAF Board Project P-3735 
To: Commanding General, A..F Tactical Center, Orlando, Florida. 
ATTNLt. Forney, Sq "A", 901st AAF BIT (Tactical Wing) 
THRU: Director of Operations and Training. 
1. Transmitted herewith is a complete list of meteorological data 
taken at the Chemical Demonstration Range, AFTAC, on 12 January 1945 in 
conjunction with AAF Board Project F-3735. 
2. Below is an explanation of the symbols appearing in the tabula- 
tion of the data: 
* - denotes time of spray run 
T ’ • - temperature at 2 meters (degrees 
centigrade) 
T - temperature at .3 meters (degrees 
centigrade) 
Tg - temperature at 6 meters (degrees 
centigrade) 
Tg - T - temperature at 2 meters minus tempera- 
• . ture at .3 meters (degrees centigrade) 
Tg - T g - temperature at 6 meters minus tempera- 
ture at .3 meters (degrees centigrade) 
D2 - wind direction at 2 meters 
- wind speed in miles per hour at 2 meters 
- wind direction at 12 meters 
12 
- wind speed in miles per hour at 12 meters 
H.H. - relative humidity in percent {%) 
- 1 (for wind speed) wind speed of less than 1 mile per hour 
RESTRICTED RESTRICTED 
Ltr, liCO, 26th Wea Reg, 13 Jan 45, to GO, AETAC, sub; Meteorological 
Data for AAF Bd Proj F-3735 
3, The temperature difference terms (Tg - T - T j) indicates 
the lapse rates of temperature between the heights indicated by the re- 
scripts* The more positive the lapse rate (as defined above) in a .-ayer 
of the more stable the atmosphere in the layer; the more negative ->.;c 
lapse rate in a layer the more unstable the atmosphere in the layer* A 
result of instability is turbulence, which can be likened to a boiling 
effect. ’Yith such a condition some of the particles of spray will be 
momentarily held off the ground by rising currents of air while others 
will be brought to the ground by rapidly descending currents of air* This 
is a probable explanation of ”spotty" results* result of stability is 
a stratification of the atmosphere in which the only movement of air is 
horizontal* V/ith such a condition there is no overtuning, as with in- 
stability, only a steady descent of the particles, the rate of which will 
increase with increased size of the particles of spray, 
4, The lapse rate in the layer between 2 meters and *3 meters is trie 
common chemical warfare lapse rate, and is used to describe stability con- 
ditions in the layer most effecting the deposit of spray and smoke on the 
ground surface* Likewise, the wind at 2 meters is the wind which is con- 
sidered to have the most important effect at the surface* 
5* The lapse rate in the layer between 6 meters and *3 meters, and 
the 12 meter wind velocity are included to give an indication of condi- 
tions at the point of spray release* 
/s/ Everett M, Drools 
EVERETT !.-• BivOOivE 
Captain, Air Corps 
Actg Regional Control Office 
1 Incl: 
1 pg Meteorological Data (Dup) 
RESTRICTED RESTRICTED 
Date 27 January 1945 
Time 
rp 
x2 
T.3 
T6 
T2 - 0? 
T« - T.3 
i M 
3X2 
V R.H. 
12 
1400 
20.9 
21.9 
19.8 
-1.00 
-2.1 
ENE 
10 
E 
10 59 
1415 
21,7 
23.15 
21.9 
-1.45 
-1.25 
ENE 
13 
E 
15 
1410 
21.45 
22.75 
21.4 
-1.30 
-1.35 
ESS 
5 
E 
11 
1415 
21.2 
22.7 
20,4 
-1.50 
-2.3 
E 
9 
E 
10 
1-20 
21.2 
22.8 
20.2 
-1.60 
-2.6 
E 
7 
ENE 
8 
*1423 
21.0 
22.0 
-1.00 
ESE 
10 
E 
14 
1424 
21.0 
21.9 
- .90 
E 
6 
E 
13 
1425 
21.2 
22.0 
21.3 
- .80 
- .70 
E 
9 
E 
8 
1430 
22,1 
23,0 
20.4 
- .90 
-2,6 
E 
7 
ENE 
9 57 
1435 
21.35 
22.85 
22.1 
-1.50 
- .75 
E 
8 
ENE 
11 
1440 
21.5 
23.1 
21.3 
-1.60 
-1.8 
Ex] E 
11 
ENE 
11 
1445 
21.4 
22.2 
21.9 
- .80 
- .30 
HE 
4 
E 
9 
1450 
22,0 
22.9 
22.-1 
- .90 
- ,80 
EKE 
i 
ESE 
7 
1455 
22,2 
24.05 
22.2 
-1.85 
-1.85 
ENE 
7 
E 
8 
1500 
22.2 
23.95 
22.7 
-1.75 
-1.25 
ENE 
13 
ENE 
12 57 
* 15 0 3 
20,8 
21.55 
- .75 
E 
10 
E 
15 
1504 
20. ' 
21.3 
- .60 
E 
10 
ENE 
12 
1505 
20.65 
21.2 
20.8 
- .55 
- .40 
E 
6 
£ 
10 
RESTRICTED RESTRICTED 
Data ]» Uarch 1945 
Time 
T2 
1.3 
*6 
12 " 1.3 
-T.3D, 
... .Jz 
D12 V12 
i v. • - - • 
1345 
28.4 
50.1 
27.9 
-1.7 
-2.2 
iii .ill 
6 
IT 4 
1350 
27.4 
29.6 
O ry T 
/ • 1 
-2.2 
-2.5 
:n.; 
8 
lar.T 5 
1355 
27,5 
28.9 
27.1 
-1.4 
-1.8 
N 
4 
ti 8 
1400 
27.0 
28.6 
26.8 
-1.6 
-1.8- 
MB 
2 
\i 3 
57,o 
#10 *14 05 
23.5 
31.4 
28.1 
-1.9 
-3.3 
W 
2 
w -i 
140b 
28.6 
30.6 
27.1 
-2.0 
-3.5 
m 
5 
1TV* -1 
1407 
28.5 
30.6 
27.3 
-2.1 
-3.3 
u 
2 
IT 5 
1410 
28.7 
30.9 
28.0 
-2.2 
-2.9 
K 
-1 
m -i 
1415 
28.5 
30.5 
38.0 
-2.5 
-2.5 
m 
4 
m 5 
1420 
27.9 
29.3 
27.1 
-1.4 
-2.2 
Vf 
2 
IM 1 
1425 
28.1 
29.7 
27.6 
-1.6 
-2.1 
V/ 
2 
LIKW —1 
1430 
29.8 
32.3 
23.0 
-2.5 
-3.3 
w 
2 
ITU -1 
45, o 
1435 
30.5 
32.5 
29.4 
-2.0 
-3.1 
m 
-1 
STV 3 
1440 
29.4 
31.0 
28.9 
-1.6 
-2.1 
it 
4 
V«SW 3 
1445 
27.8 
28.9 
27.3 
-1.1 - 
-1.6 
ITTv 
3 
ME 6 
. 1450 
27.5 
28.6 
27.4 
-1.1 
-1.2 
N 
3 
KB 5 
#11 *1455 
27.5 
29.1 
27.3 
-1.6 
-1.8 
US 
6 
K 5 
1456 
27.2 
28.4 
27.1 
-1.2 
-1.3 
N 
3 
N 3 
1500 
27.3 
28.7 
27.4 
-1.5 
-1.3 
MB 
5 
IiS 2 
54;.o 
1505 
27.6 
28.4 
27.5 
- .8 
- .9 
MB- 
2 
BITE 3 
1510 
27.7 
29.6 
27.6 
-1.9 
-2.0 
m 
4 
BITB 5 
1515 
28.5 
30.6 
27.7 
-2.1 
-2.9 
N 
4 
KKVI 7 
1520 
28.0 
29.4 
27.4 
-1.4 
-2.0 
m 
5 
MB 8 
#o *1523 
27.9 
29.3 
27.3 
-1.4 
-2.0 
NM 
4 
KKVf 3 
1524 
28.4 
29.6 
27.8 
-1.2- 
-1.8 
im 
2 
NKW 3 
RESTRICTED RESTRICTED 
Date 1 Ilaroh 1945 (coirt^d) 
Tine 
?2 
T.3 
T6 
t2 ' T.3 
t6 - 1.3 
V2 
d12 
Vl2 
R.H. 
1525 
28*8 
30,0 
27.9 
-1.2 
-2^1 
NEW 
2 
MIE 
3 
1530 
28.0 
29.3 
27.9 
-1.3 
-1.4 
K 
4 
m:e 
6 
4Q% 
1535 
28.0 
29.3 
27,8 
-1.3 
-1.5 
MB 
3 
HUE* 
2 
1540 
29.0 
29.0 
27.7 
-1.1 
-1.4 
IM 
3- 
im 
4 
1545 
28.0 
29.3 
27.7 
-1.3 
-1.6 
tiiui 
4 
w 
3 - 
1550 
28.4 
30.2 
27.8 
-1.8 
-2.4 
mm 
3 
IM 
1 
2 
2 *1552 
28.2 
30.0 
27.8 
-1.8 
-2.2 
mm 
2 
IM 
2 
1553 
28.8 
30.5 
28.2 
-1.7 
-2.3 
mm 
-1 
1IW 
2 
1554 
29.1 
30.7 
28.3 
-1.9 
-2.6 
mm 
-1 
IM 
2 
RESTRICTED RESTRICTED 
Date 6 Larch 1945 
Tine 
t2 
r.3 
T6 
T2 " X.3 
?6 ”1.3 
V 2 
d12 
V12 
1\ • 
1315 
26.2 
30.5 
28.7 
-2,3 
-1.8 
SW 
8 
SoJOj-i 
11 
1320 
26.8 
28.6 
26.9 
-1.8 
-1.7 
sse 
o 
Kj> 
SSS 
8 
1325 
26.2 
30.5 
28.9 
-2.3 
-1.6 
s 
7 
ssw 
11 
1330 
27.8 
30.0 
27.8 
-2.2 
-2.2 
sw 
8 
ssw 
11 
45,3 
1335 
27.3 
29.4 
26.7 
'-2.1 
-2.7 
sw 
8 
sw 
10 
1340 
28.0 
30.7 
27.5 
-2.7 
-3.2 
s 
10 
ssw 
10 
#12*1343 
28.3 
30.1 
27.3 
-1.8 
-2.8 
s 
11 
Soxj 
10 
1344 
28.0 
30.3 
27.4 
-2.3 
-2.9 
ssw 
11 
SSE 
12 
1345 
28.1 
30.0 
27.4 
-1.9 
-2.6 
sss 
10 
SSE 
16 
1350 
28.2 
31.0 
28.2 
-2.8 
-2.8 
ssw 
10 
s 
6 
♦ 
1355 
28.4 
31.1 
27.9 
-2.7 
-3.2 
s 
10 
SSE 
9 
1400 
28.4 
31.2 
28.4 
-2.8 
-2.8 
ssw 
10 
SSW 
12 
44;-o 
1405 
28.4 
30.9 
28.0 
-2.5 
-2.9 
ssw 
o 
sw 
9 
1410 
29.2 
31.6 
28.6 
-2.4 
-3.0 
s 
4 
sw 
8 
#13*1413 
29.2 
31.5 
28.4 
-2.3 
-3.1 
s 
6 
SE 
15 
1414 
28.3 
30.5 
CM 
. 
00 
CM 
-2.2 
-2.3 
s 
10 
SSW 
11 
4:2% 
RESTRICTED RESTRICTED 
Date 7 March 1945 
T ine 
'4 
V 
T6 
to 
e-t 
. 
Eh3 
*6 " T.3 
D2 
V2 
D12 
V12 
R.H. 
1425 
29.1 
31.7 
27.8 
-2.6 
-3.9 
WSW 
7 
W 
i% 
8 
1430 
28.9 
31.6 
28.2 
-2.7 • 
-3.4 
S.v 
3 
IJIJIT 
5 
415a 
1435 
29.1 
31.6 
28.1 
-2.5 
-3.5 
SS'.Y 
12 
SW 
8 
. 8 *1440 
28.6 
31.2 
28.4 
-2.6 
-2.8 
SIT 
10 
Vi 
12 
1441 
28.4 
51.2 
27,9 
-2.8 
-3.3 
■.VS./ 
9 
W , 
10 
1445 
30.0 
32,3 
28.0 
-2.3 
-4.3 
i-iiiw 
8 
9 
1450 
23.1 
32.1 
27.9 
-2.0 
-4.2 
VI 
8 
w 
4 
1455 
29.8 
' 31.8 
28.1 
-2.0 
-3,7 
w 
7 
sw 
6 
1500 
29.0 
31.7 
27.8 
-2.7 
-3.9 
WSW 
6 
r 
it 
13 
39/o 
1505 
29.0 
32.2 
28.3 
-2.2 
-3.9 
s 
6 
SVI 
9 
1510 
29.8 
31.9 
28.5 
-2.1 
-3.4 
ssw 
6 
sw 
5 
irO *1511 
29.8 
31.6 
28.5 
-1.8 
-3.1 
sw 
10 
wsw 
10 
1515 
29.2 
31.9 
28.7 
-2.7 
-3.2 
m 
3 
w 
9 
1520 
29.2 
32.0 
26.2 
-2.8 
-3.8 
VI 
5 
m 
4 
1525 
29.2 
31.8 
28.3 
-2.3 
-3.5 
TOY 
5 
N 
5 
1530 
29.2 
31.8 
27.9 
-2.6 
-3.9 
NHIf’f 
2 
HE 
7 
35% 
*1535 
29.7 
32.5 
28.6 
-2.8 
-3.9 
mm 
5 
im 
4 
1536 
29.7 
32.5 
28.6 
-2.8 
-3.9 
m 
-1 
mm 
4 
1540 
30.0 
32.5 
29.2 
-2.3 
-3.1 
SVI 
8 
sw 
3 
1545 
29.3 
31.7 
28.7 
-2.4 
-3.0 
WSW 
5 
KW 
7 
1550 
30.0 
31.8 
28.8 
-1.8 
-3,0 
VISVf 
7 
W 
5 
1555 
30.0 
32.1 
28.8 
-2.1 
-3.3 
ssir 
8 
w 
11 
r4 *1600 . 
29.8 
31.9 
28.5 
-2.1 
-3.4 
Vi 
8 
VBW 
8 
1601 
29.8 
31.9 
28.5 
-2.1 
-3.4 
mm 
4 
SW 
3 
1602 
29.8 
31.9 
28.5 
-2.1 
-3.4 
SVI 
3 
sw 
5 
RESTRICTED RESTRICTED 
DENSITY DATA ON TESTS IN THIRD EVENT 
RESTRICTED RESTRICTED 
S : 
T. 1 n. e A 
Line B 
t : 
: 
Flies : Particle Data 
: ; 
Flies 
; Flies : 
Particle Data 
a : 
Mosquito: 
in dishes 3/: 4/ 
;Mbsquito; 
in dishes3/ 
: in : 
t ! 
Larvae U 50% ; 
100% :No,: Med. : Per cent of total spray 
;Larvae 1/ 50% 
: 100% 
: Cages : 
No.; Med. : 
Percent of total spray : 
i : 
(%) Kill: 
down ; 
down :per; Diam. : by wt. in drops below 
:(%) Kill: 
down 
; down 
: % : 
per: Diam. : 
by wt. in drops below ; 
o : 
; 
(min): 
(min):sq,: by wt.; 100 : 200 ; 400: 800 
; ; 
(min) 
; (min) 
: Kill ; 
sq,: by wt.; 
100 ; 200; 400 : 800: : 
n ; 
: 
: 
;in.: (mic.); mic«; rale.: micj mic. 
: ; 
; 
: 2/ ; 
in. :(mic.) ; 
mic.; raicu mic,; micu : 
1 
25 
17 
c- 
• 
o 
cv 
85 
7 
16 
64 
3 
75 
— 
— 6 282 0.3 0.3 100 — 
95 
6 
16 
100 
5 
95 
20 
21 3 434 0 0 20 100 
90 
13 
23 
100 
7 
90 
9 
25 3 456 0 0.9 6.2 100 
100 
8 
66 
72 
9 
5 
5 
8 3 650 0 0 5.6 33 
85 
8 
19 
37 
11 
0 
13 
20 0.3 
30 
7 
11 
53 
13 
0 
96 
240/ 0 
0 
9 
18 
17 
15 
20 
240/ 
240/ 0 
10 
240/ 
240/ 
42 
17 
15 
240/ 
240/ 0 
0 
240/ 
240/ 
0 
a/ 
Per cent 
mortality in 24 hours of Anopheles ouadriraaculatus larvae. 
2/ 
Per cent mortality in 24 hours of houseflies in cages. No 
mortality in untreated checks. 
2/ 
Time in minutes for 50% and 100% Knockdown of houseflies placed in exposed petri dishes. No knockdown in untreated checks. 
V 
Counts made on magnesium oxide coated slides. 
THIRD EVKMT - ITC 1 
Date - 12 January 1945. 
Test No. - 1, 
Tank Usei - British S.G.I. (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 300 feet. 
Airspeed - 200 MPH 
Aurplane - A-20G, 
Time of Flight - 1550 hours. 
Mixture - 5? (w/v) DDT in No,' 2 diesel fuel oil with du Pont oil red dye added. 
Quantity in Tank - 30 American gallons. 
Line Data - Lines A and B 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 5 MPH at 2 meters. 
52 RESTRICTED 
s 
Line A 
Line 
B 
t 
: 
Flies 
: 
Particle Data 
Flies 
: Flies: 
Particle Data 
a 
Mosquito; 
in dishesl/ 
: 
4r_ 
Mosquito 
in dishes3/ 
; in : 
t 
Larvael/: 
50$ ; 
100$ 
;No, 
Med. 
; Percent of total spray 
Larvael/ 
50$ ; 
100$ 
: Cages; 
No.; 
Med. ; 
Percent of total spray : 
i : 
($) Kill: 
down ; 
down; 
:per 
Diam 
; by wt. in drops below 
($) Kill 
down ; 
down 
; $ ; 
per: 
Diam. ; 
by wt. in drops below ; 
o : 
(min): 
(min) 
:sq. 
by wt. 
; 100 : 200 
400 : 800 
(min): 
(min) 
; Kill : 
sq. 
by wt.: 
100 : 200 
400 ; 800 
n 
: 
;in. 
(mic) 
: mic,; mic. 
mic,; mic. 
; 
; 2/ ; 
in 
(mic) ; 
mic.: mic. 
mic.: mic. : 
1 
10 
15 
26 
98 
242 
1.38 24.2 
100 
100 
240 
15.4 
18 
no 
16.0 100 
3 
0 
61 
97 
13 
176 
7.7 100 
90 
240 
44.7 
13 
220 
1.26 22.3 
100 
5 
0 
65 
110 
16 
242 
4.1 19.0 
100 
20 
122 
240 
29.0 
10 
no 
1.04 5.4 
100 
7 
90 
79 
240 
13 
154 
5.3 100 
65 
240 
27.3 
1 
9 
0 
240 
6 
132 
16.6 100 
5 
240 
36.4 
2 
U 
5 
67 
240 
15 
176 
7.8 100 
20 
240 
1 
13 
15 
77 
240 
6 
2,0 100 
35 
240 
0 
15 
5 
74 
1 
10 
1 
17 
10 
92 
1 
0 
1 
y. 
Percent mortality in 24 hours of Anopheles quadriraaculatus larvae. 
No mortality in untreated checks. 
2/ 
Percent mortality in 24 hours of houseflies in cages. No mortality in untreated 
checks. 
y. 
Time in minutes for 50$ and 100$ knock do™ of 
houseflies placed in exposed Petri dishes. 
No knockdown 
in untreated checks. 
Counts made on magnesium oxide coated slides. 
THIRD EVENT - NO. 2 
Date - 1 March 1945. 
Test No. - 2. 
Tank used - British S. C. I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 300 ft. 
Airspeed - 200 MPH 
Airplane - A-26B. 
Time of Flight - 1552 
Mixture - 5$ (w/v) DDT in No. 2 diesel fuel oil with du Pont oil red dye added. 
Quantity in Tank - 30 American gallons. 
Line Data - Lines A and B 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 2 MPH, 
RESTRICTED RESTRICTED 
s 
Line 
A 
Line 
B 
t 
Flies 
Particle Data 
; ; 
Flies Flies: 
Particle Data 
a :Mosquito 
in dishes3/ 
/; 
4/ 
;Mosquito; 
in dishesV; in 
t 
Larvael/ 
50$ 
: 1005 
5;No. 
s Med. 
; Per Cdnt of total 
spray 
: Larvae V? 
50$ 
;100$ ;Cages;No,; 
Med, ; Percent of total spray ; 
i ;($) Kills 
down 
! down;per 
; Diam 
: by wt. in drops below 
;($) Kill; 
down 
:down ; $ 
per; 
Diam, ; by wt. in drops below ; 
o 
(min) 
; (min)sq. 
: by wt. 
: 100 : 200 
; 400 ; 
800 
; ; 
(min) 
;(min);Kill 
sq.: 
by wt.; 100 ; 200 ; 400 ; 800 ; 
n 
! 
;in. 
; (mic) 
: mic.: mic. 
: mic,: 
mic. 
: ; 
; « 2/ 
in ; 
(mic) ; mic,; mic,; mic,; mic, ; 
1 
100 
240 
0 
15 
“240 §575" 
1 
100 
3 
100 
109 
227 
0 
45 
43 
50 81.0 
1 
100 
5 
100 
108 
123 
1 
100 
90 
39 
48 94.1 
2 
100 
7 
90 
27 
35 
1 
100 
95 
31 
44 98.2 
2 
100 
9 
0 
33 
32 
4 
100 
75 
7 
19 85.5 
3 
100 
11 
AO 
17 
26 
6 
154 
1.1 100 
100 
n 
21 97.8 
5 
418 34.9 100 
13 
50 
16 
25 
54 
418 
.35 4.9 
56.2 
100 
80 
13 
19 93.3 
1 
100 
15 
10 
17 
26 
90 
198 
4.9 54.7 
100 
65 
8 
17 96.6 
2 
528 .91 .91 100 
17 
15 
18 
27 
457 
330 
1.3 17.1 
100 
5 
2 
12 93.3 
1 
100 
I/, 
Percent mortality in 24 hours of Anopheles quadrimaculatus larvae. No 
mortality in untreated checks. 
2/ 
Percent 
mortality in 24 hours of 
houseflies 
in cages. No mortality in untreated checks. 
2/ 
Time in minutes for 50$ 
and 100$ knockdown of houseflies placed in exposed Petri dishes. 
No knockdown in untreated checks. 
V 
Counts made on magnesium oxide coated slides. 
THIRD EVENT - NO. 3 
Date - ? ’.'arch 1945* 
Test No. - 3 
Tank used - British S. C. I, (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 300 ft. 
Airspeed - 200 MPH 
Airplane - A-26B 
Time of Flight - 1535 
Mixture - 10% (w/v) DDT, 24 gals. No. 2 diesel fuel oil. 6 gals. Barrett's heavy solvent. duPont oil red dye added. 
Quantity in Tank - 30 American gallons. w 
Line Data - Lines A and B 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 5 MPH 
RESTRICTED RESTRICTED 
S ! 
Line A 
Line 
B 
t ; 
• 
Flies 
Particle Data 
; 
Flies 
;Flies 
• 
Particle Data 
: 
a : 
Mosquito: 
in dishes!/; 
4/ 
Mosquito: 
in dishes!/ 
: in 
; 
t : 
Larvael/: 
50* 
: 100*: 
No.: 
Med. 
* Per cent of 
total spray 
larvael/; 
50* 
: 100* 
;Cages:No.: 
Med. 
; Percent of total 
spray 
: 
i s 
(*) Kill: 
down 
:dom 
per: 
Diam 
: by wt. in drops below 
(*) Kill: 
down 
:down 
: % 
:per; 
Diam. 
: by wt 
in drops below 
: 
o : 
5 
(min):(min):sq,: 
by wt 
.: 1D0 : 200 ; 
400 : 800 
; 
(min) 
:(min) ;Kill 
:sq.: 
by wt. 
: 100 : 
200 ; 
400 
; 800 
. 
n 
: 
in: 
(mic] 
: mic,: mic.: 
mic.: mic. 
: 
t 
: 2/ 
:in.: 
(mic) 
: mic.: 
mic.: 
mic. 
: mic. 
: 
1 
5 
2 
10 
1 
100 
40 
18 
31 
25 
— slide spoiled 
3 
90 
15 
25 
10 
1D0 
60 
16 
20 
58.3 
12 
198 
50 
100 
5 
100 
14 
20 
11 
286 
4*6 
100 
85 
14 
24 
100 
21 
198 
.3 
24.5 
100 
7 
IDO 
23 
19 
16 
330 
.27 15.8 
1D0 
85 
14 
22 
100 
16 
220 
3.4 
18.3 
1D0 
9 
100 
13 
18 
33 
286 
1.0 36.0 
100 
70 
14 
19 
100 
26 
154 
7.1 
100 
11 
IDO 
11 
16 
22 
264 
.33 14.3 
100 
100 
11 
14 
100 
42 
176 • 
2.2 
100 
13 
100 
9 
16 
13 
330 
.07 .68 
25.3 100 
1D0 
11 
12 
1D0 
29 
198 
.8 
6.8 
100 
15 
100 
9 
17 
125 
242 
1.3 26.1 
1D0 
100 
11 
15 
100 
117 
220 
1.3 
33.9 100 
17 
100 
8 
13 
135 
286 
2.8 20.6 
1D0 
100 
8 
14 
100 
3 
132 
.6 
1.8 1.8 
100 
y 
Percent mortality in 24 hours of Anopheles quadrimaculatus larvae. No mortality in untreated checks 
• 
y 
Percent 
mortality in 24 hours of houseflies 
in cages. No mortality in untreated checks 
, 
2/ 
Time in minutes for 50* and 1D0* knockdown of houseflies placed in exposed Petri dishes. 
No knockdown in untreated checks. 
y 
Counts made on magnesium oxide 
coated slides. 
THIRD EVENT - NO. 4 
Date - 7 March 1945. 
Test No. - 4 
Tank used - British S. C. I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 300 ft. 
Airspeed - 200 MPH 
Airplane - A-26B 
Time of Flight - 1600 
Mixture - 10£ (w/v) DDT, 24 gals. No, 2 diesel fuel oil. 6 gals. Barrett’s heavy solvent. duPont oil red dye. 
Quantity in Tank - 30 American gallons. 
Line Data - Lines A and B 200 yards apart. (See drawing). 
Odd nunbered stations - 50 yards apart (See drawing). 
Wind Velocity - 8 MPH. 
RESTRICTED RESTRICTED 
s 
Line A 
. 
Line 
B 
t 
Flies : 
Particle Data s s 
Flies ; 
Flies: 
Particle Data 
a 
Mosquito: 
in dishes3/: 
4Z 
:Mosquito: 
in dishes3/: 
in : 
47^ 
t 
Larvael/ 
50% 
;100% sNo.s 
Med. 
: Percent of total spray sLarvael/: 
50% 
;100£ : 
Cages:No.: 
Med. 
: Percent of total • 
spray 
i 
(*) Kills 
down 
sdown jper: 
Diam. 
j by wt. in drops below :{%) Kills 
down 
;down : 
{%) :per: 
Diam. 
; by wt 
in drops below 
o 
(min) 
:(min):sq.; 
by wt.s 100 s 200 
400 ; 800 : : 
(min) 
:(min): 
Kill :sq.: 
by wt. 
: 100 » 
200 ; 400 ; 
800 
n 
: sin.: 
(mic 
): mic.: mic. 
mic.: mic. : : 
* : 
2/ :in.; 
(mic.) 
: mic.: 
mic.: mic.: 
mic. 
1 
60 
107 
142 - 
75 
73 
240/ 
100 11 
152 
14.5 
100 
— 
3 
15 
19 
32 1 
260 
0 22 
100 100 
12 
23 
90 36 
434 
0.4 
7.6 7.6 
100 
5 
100 
18 
33 12 
369 
0 8.2 
62 100 70 
12 
17 
97 15 
369 
0.5 
6.5 44 
100 
7 
25 
18 
22 11 
260 
0.6 22 
100 70 
20 
25 
100 4 
868 
0 
0.08 0.4 
11 
9 
100 
11 
15 3 
412 
0 0 
34 100 75 
11 
19 
100 3 
542 
0 
0 7.5 
31 
11 
100 
41 
51 1 
100 
240/ 
240/ 
100 8 
434 
0.3 
2 15 
100 
13 
0 
240/ 
240/ 0 
55 
240/ 
240/ 
12 0 
15 
0 
240/ 
240/ 0 
0 
240/ 
240/ 
3 0 
17 
2 
240/ 
240/ 0 
0 
240/ 
240/ 
100(?) 0 
1/ Percent mortality in 24 hours of Anopheles quadriraaculatus larvae. 
2/ Percent mortality in 24 hours of houseflies in 
cages. No mortality in untreated checks. 
3/ Time in minutes for 50% and knockdown of houseflies placed in exposed petri dishes. No knockdown 
in untreated checks. 
lj Counts made on magnesium oxide coated slides. 
THIRD EVENT - NO 5 
Date - 12 January 1945. 
Test No. - 5- 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 150 feet. 
Airspeed - 200 MPH4 
Airplane - A-20G., 
Time of FlighlT*"1612 hours. 
Mixture - 5? (w/v) DDT in No. 2 diesel fuel oil with du Pont oil red dye added 
Quantity in Tank - 30 America! Gallons. 
Line Data - Lines A and B 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 8 MPH at 2 meters. 
RESTRICTED RESTRICTED 
s 
Line A 
Line 
B 
t 
: Flies : 
Particle Data 
: Flies 
: Flies; 
Particle Data 
a 
Mosquito 
s in dishes3/:r 
4/ 
Mosquito 
: in dishes!/ 
in s 
J 
IT 
t iLarvael/ 
: 50$ : 100$; No.: 
Med. 
: Percent of total spray 
Larvael/: 50$ 
;100$ 
:Cages;No.: 
Med. : 
Percent of total spray : 
i 
($) Kill 
s down :down sper: 
Diam 
: by wt. in drops below 
($) Kill 
: down 
sdown 
: $ sper: 
Diam. s 
by wt. 
in drops below s 
o 
s (min) :(min):sq.s 
by wt.: 100 s 200 
400 ; 800 
: (min) 
s(min):Kill ssq.s 
by wt.: 
100 s 
200 : 
400 s 800 : 
n 
! ; sin.: 
(mic) 
: mic.: mic. 
mic.: mic. 
: 
: 2/> sin : 
(mic) : 
mic. : 
mic.: 
mic.: mic. : 
1 
100 
10 15 90 
440 
3 ~ 
30.5 100 
100 
7 
12 
100 270 
220 
1.5 
30.7 
100 
3 
100 
9 14 117 
264 
.003 .97 
100 
100 
15 
30 
87.0 105 
286 
.48 
19.8 
100 
5 
100 
8 18 86 
198 
.29 43*9 
100 
100 
12 
34 
67 
220 
3.0 
36.5 
100 
7 
10 
29 35 51 
242 
3.2 17.2 
100 
100 
36 
55 
0.0 12 
110 
10.9 
100 
9 
90 
23 47 43 
198 
2.4 54.3 
100 
100 
88 
240 
0.0 15 
6.8 
100 
11 
90 
31 46 22 
154 
7.7 55.9 
100 
100 
36 
85 
36.8 16 
220 
1.3 
25.8 
100 
13 
0 
75 240 7 
198 
4.4 44.7 
100 
100 
84 
223 
16.3 1 
15 
25 
89 120 16 
132 
18.5 100 
60 
240 
43.8 1 
17 
90 
82 126 1 
85 
49 
77 
8 
242 
1.9 
1.9 
100 
1/ Percent mortality in 24 hours of Anopheles quadrimaculatus larvae. 
No mortality in untreated checks. 
2/ Percent mortality in 24 hours of houseflies in cages. No mortality 
in untreated checks. 
3/ Time in minutes for 50$ and 100$ knockdown of houseflies placed in exposed Petri dishes. No knockdown in untreated checks. 
ij Counts made on magnesium oxide coated slides. 
' 
THIRD EVENT - NO. 6 
Date - 1 March 1945* 
Test No. - 6 
Tank used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 150 
Airspeed - 200 MPH 
Airplane - A-26B 
Time of Flight - 1523. 
Mixture - 5% (w/v) DDT in No. 2 diesel fuel oil with duPont oil red dye added. 
Quantity in Tank - 30 American gallons. 
line Data - Lines A and B 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 4 MPH. 
RESTRICTED RESTRICTED 
3 
Lin 
e A 
Lin 
e B 
t 
Flies • 
Particle 
Data 
1 
Flies2/ 
: Flies 
Particle Data 
a 
: Mosquitos in dishesS/ : 
HZ_ 
sMosquito 
: in dishes 3/ 
4/ . 
t 
Larvael/: 50$ 
:100$ ; 
No. 
ked. 
: Percent of total spray sLarvaeV 
in 
: 50$ 
:100a> 
No. 
: Med.:Percent 
of total spray 
i 
($) down 
sdown : 
Per 
Diam. 
; by wt. in 
drops below : ($) 
Cages 
: down 
:down 
per 
: Diamsby wt. 
in drops below 
0 
(min) (min) : 
sq. 
by wt. 
; 100 
s 200 
: 400 s 800 : 
($) 
: (min) 
:(min) 
sq. 
: by wt:100 
: 200 
: 400 
: 800 
n 
in. 
(mic) 
: mic 
; mic 
: mic : mic : 
: 
: 
in. 
; mic :mic 
; mic 
; mic 
: mic 
1 
100 5 
9 
100 
434 
0.4 
3.o 
32.9 100 100 
100 
i 
9 
9 
650 
_ 
4.4 
39.5 
3 
100 6 
17 
53 
217 
75 
37.3 
100 - 95 
100 
6 
8 
50 
325 
64 
2.9 
31.3 
100 
5 
95 28 
25 
33 
152 
17.3 
49.4 
100 - 100 
100 
7 
8 
50 
174 
12 
32.7 
100 
- 
7 
75 23 
44 
22 
217 
5.5 
59.1 
100 - 100 
100 
14 
15 
40 
152 
3.5 
88.1 
100 
- 
9 
80 42 
86 
11 
152 
8.8 
100 
35 
11 
34 
79 
15 
130 
11.4 
58.7 
100 
- 
11 
0 42 
113 
4 
0 
6 
- 
- 
0 
13 
40 
- 
6 
0 
4 
129 
- 
0 
15 
30 
- 
3 
5 
0 
- 
- 
0 
17 
0 
3 
0 
0 
— 
0 
1/ $ mortality in 
24 hours 
of Anopheles quadrimaculatus larvae. No mortality in untreated 
checks. 
2/ $ mortality in 24 hours 
of houseflies in 
cages. 
No mortality in untreated checks. 
3/ Time in minutes 
for 50$ and 100$ knock-down of houseflies in exposed petri dishes. No knock-down in 
untreated 
checks. 
ij Measurements by Bureau of Entomology & Plant Quarantine on magnesium oxide coated slides 
• 
THIRD EVENT NO. 7 
Date - 27 January 1945. 
Test Xc. - 3- 
Tan!: Hseel - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 150 feet. 
Airspeed - 200 MPH. 
Airplane - A-20G. 
Time of Flight - 1503 hours. 
Mixture - 10$ (w/v) DDT in No. 2 diesel fuel oil with du Pont oil red dye added. 
Quantity in Tank - 30 American gallons. 
Line Data - Lines A and B - 200 yards apart. (See Drawing) 
Odd numbered stations - 50 yards apart. (See Drawing) 
Wind Velocity - 10 MPH at 2 meters. . 
RESTRICTED RESTRICTED 
s 
Line 
A 
Line B 
t 
: Flies 
; 
Particle Data 
: Flies :Fnes 
Particle Data 
a 
Mosquito; in dishes!/ 
: 
4/ 
:Mosquito: in dishes!/; in 
t 
Larvael/: 50$ 
; 100$: 
Ho.; 
Med. 
; Per cent of total spray :Larvael/: 50$ 
:100$ :Cages:No.: Med. : 
Percent of total spray 
i 
($) Kill: down 
:down : 
per; 
Diam 
; by wt. in drops below :($) 
Kill: down 
:down : $ 
:per; Diam. : 
by wt. in drops below 
c 
: (min) 
:(min): 
sq,; 
by wt 
.: 100 : 200 ; 
400 ; 800 : 
: (min) 
;(min) ;Kin 
:sq,; by wt.: 
100 : 200 
: 400 ; 800 
n 
; :in.: 
(mic) 
: mic.; mic.: 
mic.; mic. : 
: 
: :2/ 
sin ; (mic) : 
mic.; mic 
; mic.: mic. 
1 
5 
240+ 
0 
10 
240* 100 
0 
3 
0 
240+ 
0 
10 
240+ 25 
0 
3 
10 
240+ 
0 
5 
240+ 58.3 
C 
7 
5 
240* 
0 
100 
5 
240+ 4.4 
0 
9 
15 
240+ 
1 
100 
15 
240* 50 
0 
11 
20 113 
189 
3 
110 
5.4 15.9 
100 30 
240+ 0 
1 
100 
13 
25 87 
129 
0 
60 
240* 76.7 
1 
100 
15 
25 77 
177 
3 
220 
1.5 20.1 
100 65 
79 
169 50 
2 
100 
17 
55 17 
26 
35 
330 
1.0 9.0 
51.2 100 100 
15 
47 0 
13 no 24.9 100 
l/ Percent mortality in 24 hours of 
Inopheles quadrimaculatus larvae. 
No mortality in untreated checks. 
2/ 
Percent mortality in 24 hours of 
nouse flies in 
cages. No mortality in untreated checks. 
% 
3/ Time in minutes for 50$ and 100$ knockdown of houseflies placed in exposed Petri dishes. No knockdown in untreated 
checks, 
Uj Counts made on 
magnesium oxide coated slides. 
Test No. - 8 
Tank used - British S. C, I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 150 Ft. 
Airspeed - 200 MPH 
Airplane - A-26 B 
Time of Flight - 1440 
Mixture -10$ (w/v) DDT, 24 gals No, 2 Diesel Fuel Oil, 6 gals Barrett's Heavy Solvent, Du Font's oil red dye added, 
Quantity in Tank - 30 American gallons, W 
Line Data - Lines A and B 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 10 MPH 
THIRD EVENT - NO. 8 
RESTRICTED RESTRICTED 
s 
Line A 
Line B • 
t 
; 
Flies 
; 
Particle Data 
; : Flies 
Flies 
; 
Part, 1 el e Data 
a 
Mosquito: 
in dishes3/: 
41 
:Mosquito: in dishes3/ 
in 
: 
t 
Larvael/; 
50$ 
; 100$:No,; 
Med. 
; Per cent of total 
spray :Larvael/: 50$ 
:100$ 
sCages:No.: 
Med. 
Percent of total 
spray 
i 
($) Kill: 
down 
:down :per: 
Diam 
: by wt 
. in drops below 
;($) Kill: down 
:down 
$ 
;per: 
Diam. 
by wt 
. in drops below 
o 
; 
(min) 
:(min):sq.: 
by,wt.: 100 : 
200 ; 
400 : 
800 
: : (min) 
:(min);Kin 
;sq,; 
by wt. 
100 ; 
200 ; 
400 
; 800 
D 
: 
I 
:in.; 
(raic) : mic.: 
mic,: 
mic.: 
mic. 
I ! 
* 
:2/ 
:in,; 
(mic) 
mic.; 
mic.: 
mic. 
; mic. 
1 
45 
240 
2 
198 
.3 
13.3 
100 
: 
240 
76.3 
1 
100 
3 
80 
37 
71 
8 
154 
17.5 
100 
5 
240 
31.8 
1 
100 
5 
65 
74 
100 
11 
132 
1.0 
100 
0 
240 
47.8 
1 
100 
7 
20 
75 
78 
2 
no 
7.4 
100 
15 
240 
51.5 
1 
100 
9 
55 
17 
30 
16 
220 
2.5 
20.3 
100 
0 27 
61 
100 
3 
330 
.3 
20.7 
100 
11 
100 
14 
28 
29 
264 
1.7 
34.2 
100 
55 22 
33 
96.8 
7 
308 
12.5 
100 
13 
95 
16 
20 
29 
286 
1.3 
18.9 
100 
35 12 
121 
61.4 
2 
154 
2.9 
38.6 
100 
15 
65 
34 
47 
13 
374 
•4 
3.1 
66 
100 
50 25 
39 
83.3 
1 
100 
17 
90 
23 
41 
19 
220 
28.$ 
100 
5 32 
20 
92.3 
1 
100 
1/ Percent mortality in 
24 hours of Anopheles quadriraaculatus 
larvae. No mortality in untreated checks. 
2/ Percent mortality in 
24 hours of 
houseflies in 
:ages. 
No mortality in untreated checks. 
y 
Time in minutes 
for 50$ and 100$ knockdown of houseflies placed in exposed Petri dishes. 
No knockdown 
in untreated 
checks. 
W 
Counts made on magnesium oxide coated slides. 
Date - 7 March 1945* 
Test No. - 9 
Tank used - British 2. C. I. (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 150 ft, ‘ 
Airspeed - 200 MPH 
Airplane - A-26B. 
Time of Flight - 1511 
Mixture - 10$ (w/v) DDT, 24 gals. No. 2 diesel fuel oil, 6 gals. Barrett's heavy solvent, DuPont oil red dye added. 
Quantity in Tank - 30 American gallons. w 1 
Line Data - Lines A and B 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 10 MPH. 
THIRD EVENT - NO. 9 
RESTRICTED RESTRICTED 
s 
line A 
Line 
B 
t 
s Flies : 
Particle Data 
Files 
Flies: 
Particle Data 
a 
Mosquito 
: in dishes2/j 
4/ 
; Mosquitos 
in dishes!/ 
in s 
t 
Larvael/ 
; 50$ ; 100$sNo.s 
Med, ; Per cent of total spray 
s Larvael/ 
50$ 
:100$ 
Cages:No. 
: Med. s Per cent of total spray 
i 
($) Kill 
: down : down :per: 
Diam ; by wt. in drops below 
s($) Kill: 
down 
sdown 
$ spars Diam. s by wt, in drops below 
0 
: (min) :(min);sq,: 
by wt.s 100 : 200 : 400 s 800 
(rain) 
:(min):Kill ssq. 
: by wt.: 100 s 200 s 400 s 800 
n 
s : sin.: 
(mic) : mic.j mic.: mic.s raic. 
! 
2/ sin. 
: (mic) : mic,: mic,: mic.s mic. 
1 
65 
113 240+ 1 
: 1 
95 
49 
55 
100 
1 
3 
95 
74 102 2, 
: 3 
45 
44 
53 
25 
1 
5 
5 
240+ 1 
: 5 
0 
240+ 
50 
0 
7 
10 ■ 
240+ 1 
: 7 
5 
240+ 
45.5 
0 
9 
30 
210 240+ 2 
s 9 
25 
240+ 
27.3 
1 
11 
20 
240+ 1 
s 11 
10 
240+ 
28.6 
1 
13 
20 
240+ 1 
t 13 
45 
240+ 
8.3 
1 
15 
25 
210 240+ 0 
: 15 
10 
240+ 
25 
1 
17 
5 
225 240+ 0 
: 17 
20 
240+ 
0 
1 
1/ Percent mortality in 24 hours of Anopheles quadrimaculatus larvae 
No mortality in untreated 
checks. 
2/ Percent mortality in 24 hours of houseflies in cages. No mortality in untreated checks. 
3/ Time in minutes for 50$ and 
100$ knockdown of houseflies placed in exposed Petri dishes. No knockdown in untreated checks. 
\J Counts made on magnesium oxide coated slides. 
THIRD EVENT - NO. 10 
Date - 1 Mar 45- 
Test No. - 10 
Tank used - British S. C. I, (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 50 ft. 
Airspeed - 200 MPH 
Airplane - A-26B 
Time of Flight - 1405 
Mixture - (w/v) DDT in No, 2 Diesel Fuel oil with Du Pont oil red dye added. 
Quantity in Tank - 30 American gallons. 
Line Data - Lines A and B 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
VJind Velocity - 2 MPH 
RESTRICTED RESTRICTED 
s 
t 
a 
t 
i 
0 
n 
; 
Line A 
Line B 
:Mosquito: 
:Larvael/: 
i{%) Kill: 
Flie 
in dis 
50% 
down 
(min) 
53 5 
Particle Data 
; : Flie 
s :Flies: 
hes3/: in 
;Cages: 
down : % 
(min): Kill 
: 2j 
Particle Data 
5hes3/: 
4/ 
:Mosquito: in dis 
100,0: No. 
down ;per: 
(rain):sq, 
:in. 
Med, 
Diam 
by wt 
(mic) 
:Per cent of total spray :Larvael/: 50% : 
:by wt. in drops below :{%) Kill: down ; 
:100 : 200 : 400 : 800 ; : (min) ; 
:mic,: mic.: mic.; mic. : : : 
No.: Med. 
per; Diam. 
sq.: by wt. 
in ; (mic) 
;Percent of total spray 
;by wt. in drops below 
:100 ; 200 : 400 ; 800 
:mic.: mic.: mic,: mic• 
1 
95 
5 
9 223 
198 
5.6 48.6 
100 100 21 
28 
49.1 
90 132 
20.7 100 
3 
85 
14 
20 70 
132 
7.6 100 
100 69 
110 
21.9 
19 88 
58.6 100 
y 
95 
240 1 
10 
240 
27.3 
12 no 
56,9 100 
7 
65 
240 18 
132 
15.2 100 
90 80 
240 
39.5 
12 110 
47.9 100 
9 
25 
240 7 
66 
100 
60 
240 
14.7 
2 
11 
15 
240 2 
15 
240 
80 
1 
13 
15 
240 3 
25 
240 
33 
15 
240 1 
5 
240 
1 
17_ 
15 
240 
10 
240 
XJ Percent mortality 
in 24 hours of Anopheles quadrimaculatus larvae. No mortality in untreated checks- 
2/ Percent mortality in 24 hours of houseflies in 
cages. No mortality in untreated 
checks. 
2/ 
Time in minutes for' 50% and 100% knockdown of houseflies placed in exposed Petri dishes. Nc 
knockdown 
in untreated checks. 
y Counts made 
on magnesium oxide coated slides. 
THIRD EVENT - NO. 11 
Date - 1 March 1945. 
Test No. - 11 
Tank used. - British S. C. I, (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 50 ft. 
Airspeed - 200 MPH 
Airplane - A-26B 
Time of Flight - 1455 
Mixture - 5/» (w/v) DDT in No. 2 diesel fuel oil with duPont oil red dye added. 
Quantity in Tank - 30 American gallons. 
Line Data - Lines A and B 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart (See drawing), 
■V/ind Velocity - 6 MPH. 
RESTRICTED RESTRICTED 
s 
Line A 
Line B 
t 
Flies 
Particle Data 
Flies 
tFlies 
: Particle Data 
a 
Mosquito 
in dishes!/ 
4 
Mosquito 
in dishes!/ 
50% : 100% 
s in 
; 
t 
Larvael/ 
50/6 
; 100% 
:No. 
Med. 
: Per cent oi 
total spray 
Larvael/ 
:Cages 
: No.s Med. 
:Percent or 
total 
spray ! 
i 
(%) Kill 
down 
;down 
:per 
Diara 
! by wt 
in drops below 
(%) Kill 
down 
down 
: % 
: per: Diam. 
:by wt 
. in drops below . 
o 
(min) 
:(min) 
:sq. 
by wt. 
100 : 
200 : 
40U s 800 
(min) 
(min) 
sKill 
! sq.s by wt. 
:100 s 
200 
400 
800 . 
n 
: 
:in. 
(mic) 
; mic.! 
mic. s 
mic.: mic. 
! 2/ 
: in : (mic) 
rraic,: 
mic. 
mic,: 
mic. : 
1 
100 
43 
. 96 
6 
176 
6.9 
46.1 
100 
15 
240 
13.5 
1 
100 
3 
95 
45 
58 
7 
154 
11.1 
100 
15 
240 
2.2 
1-2 
100 
$ 
100 
32 
45 
6 
242 
20.3 
20.3 
100 
20 
240 
7 
80 
34 
47 
11 
220 
.64 
22.6 
100 
16 
240 
37.3 
9 198 
3.7 
59.2 
100 
9 
80 
44 
54 
15 
220 
1.4 
20.5 
100 
35 
240 
21.8 
7 88 
46.1 
100 
11 
75 
41 
49 
5 
220 
16.6 
16.6 
100 
40 
42 
108 
59.4 
16 176 
1.2 
44.1 
100 
13 
100 
32 
36 
15 
264 
.49 
17.6 
100 
90 
16 
22 
100 
20 242 
1.8 
16.1 
100 
15 
100 
15 
15 
29 
176 
.69 
52.7 
100 
100 
14 
23 
100 
25 286 
.2 
3.0 
68.5 
100 
17 
95 
32 
44 
1 
100 
100 
12 
26 
100 
147 352 
.4 
2.8 
66.3 
100 
Hi. 
Percent 
mortality in 24 hours of Anopheles quadrimaculatus larvae. No mortality in untreated checks. 
Percent mortality in 24 hours of houseflies in cages. No mortality in untreated checks. 
2/ 
Time in minutes 
for 50% and 100% knockdown of houseflies placed in exposed Petri dishes. 
No knockdown in untreated checks. 
4/ 
Counts made on 
magnesium oxide coated slides. 
Date - 3 March 1945. 
Test No. - 12 , 
Tank used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 50 ft. 
Airspeed - 20C MFH 
Airplane - A-263 
Time of Flight - 1343. 
Mixture - 10$ (w/v) DDT. 24 gals No. 2 diesel fuel oil. 6 gals.. Barrettfs Heavy Solvent, duPont oil red dye adaed, 
Quantity in Tank - 30 American galldns. 
Line Data - Lines A and B 200 yards apart. (See drawing). ” . 
Odd numbered stations - 50 yards apart (See drawing). 
Wind Velocity - 11 MPH. 
THIRD EVENT - NO, 12. 
RESTRICTED RESTRICTED 
s 
Line A 
line B 
t 
Flies ; 
Particle Data 
: 
Flies 
;Flies; 
Particle Data 
a {Mosquito 
: in dishes3/: 
Z4T 
Mosquito; 
in dishes3/ 
s in 
: 
t 
Larvael/ 
50$ 
s 100$:No.: 
Med. 
: Per cent of total 
spray 
Larvael/: 
50$ 
;100$ 
sCages;No.s 
Med. : 
Percent of total spray s 
i :($) Kill 
down 
:down ;per; 
Diam 
: by wt, in drops below 
($) Kill; 
down 
sdown 
• % 
;per; 
Diam. : 
by wt 
in drops below s 
0 
(min) 
:(min)ssq.: 
by wt 
100 : 200 s 
400 ; 
800 
s 
(min) 
s(min) :Kill 
;sq. s 
by wt.; 
100 s 
200 ; 
400 s 800 s 
n 
: sin.: 
(mic) 
s mic.: mic.; 
mic,; 
mic. 
X 
• 
: & 
sin s 
(mic) ; 
mic.; 
mic.: 
mic.: mic. : 
1 
40 
240+ 0 
80 
51 
100 
87.5 
2 
100 
3 
15 
240f 2 
100 
50 
28 
42 
81.4 
18 
132 
25.8 
100 
5 
15 
240+ 13 
154 
7.3 100 
90 
21 
26 
58.8 
41 
286 
2.1 
13.4 
100 
7 
60 
27 
64 12 
264 
1.5 3.1 
100 
100 
17 
25 
100 
a 
220 
3.8 
40.2 
100 
9 
95 
25 
31 10 
220 
1.96 9.3 
100 
100 
12 
24 
100 
40 
220 
.46 
43 
100 
11 
100 
12 
16 47 
374 
.6 11.3 
45.4 
100 
70 
12 
18 
100 
86 
198 
3.4 
51.9 
100 
13 
95 
14 
15 58 
220 
.84 29.3 
100 
100 
10 
20 
100 
44 
132 
13 
30.7 
100 
15 
100 
8 
12 53 
308 
.43 8.9 
91.5 
100 
100 
6 
1U 
100 
74 
264 
.3 
16.3 
100 
17 
100 
8 
11 82 
286 
.6 8.5 
100 
100 
7 
10 
100 
81 
352 
.39 
5.2 
83.5 100 
2/ 
Percent mortality in 24 hours of Anopheles quadrimaculatus larvae. No mortality in untreated checks. 
2/ 
Percent mortality in 24 hours of 
houseflies in 
cages, 
No mortality in untreated checks. 
2/ 
Time in minutes for 50$ and 100$ knockdown of houseflies placed in exposed Petri dishes. 
No knockdown 
in untreated checks. 
Counts made on magnesium oxide coated slides. 
Date - 3 March 1945 
Test No. - 13 
Tank used - British S. C, I, (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 50 ft. 
Airspeed - 200 MPH 
Airplane - A-26B 
Time of Flight - 1413 
Mixture - DDT. 24 gals. No. 2 Diesel Fuel Oil. 6 gals. Barrett's Heavy Solvent. duPont oil red dye added. 
Quantity in Tank - 30 American gallons. W 
Line Data - Lines A and B 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards anart (See drawing). _ 
Wind Velocity - FI ight. 
THIRD EVENT - NO. 13. 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 1 
Date - 12 January 1945. 
Test No. - 1. 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 300 feet. 
Airspeed - 200 MPH. 
Airplane - A-20G. 
Time of Flight - 1550 hours. 
Object - To determine density of DDT contamination, using du Pont oil 
red dye #50?6 as a tracer. 
Spray Mixture - Dye s 4B3.7 mg/lOO ml. 
DDT a 5% (26 lbs. corrected to 25 lbs.) 
Made to 55 gallons with #2 diesel Fuel Oil. 
Dye to DDT ratio - 1 - 11.27. 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart, (See drawing). 
Wind velocity - 5 MPH at 2 meters. 
RESULTS IN Mg PER SQUARE METER 
Line A 
Line B 
Station 
Ms* DDT Per Sq. Meter. 
Station 
Ms ,DDT Per Square Meter 
1 
1.1 
1 
3.5 
3 
4.2 
3 
8.5 
5 
3.5 
5 
9.3 
7 
3.0 
7 
4.8 
9 
1.5 
9 
3.3 
11 
2.0 
11 
3*4 
13 
Lost 
13 
0 
15 
0.4 
15 
0 
17 
0 
17 
0 
65 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 2. 
Date - 1 March 1945. 
Test No. - 2 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 300 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 
Object - To determine density of DDT contamination, using du Pont oil red 
dye 75076 as a tracer. 
Spray Mixture - Dye =• 4 Pounds, 
DDT » 52 Pounds. 
Mixed to 120 gallons of No. 2 diesel fuel oil. 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart. (See drawing). 
Wind Velocity - 2 MPH. 
Station 
RESULTS IN Mg PER 
Line A 
-Mg. DT Per Sq, Meter 
SQUARE METER 
Line B 
Station Mg DDT 
Per Square Meter 
1- 
11.1 
1 
.7 
3 
1.5 
3 
1.0 
5 
1.3 
5 
.5 
7 
.8 
7 
.2 
9 
.5 
9 
.2 
11 
1.2 
11 . 
• .2 
13 
.2 
13. 
.4 
15' 
.3 
15 
.2 
. 17 
0 
17 
0 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 3 
Date - 7 March 1945. 
Test No, - 3 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 300 feet. 
Airspeed - 200 MPH. 
Airplane - A~26B 
Time of Flight - 1535 
Object - To determine density of DDT contamination, using du Pont oil red 
dye #5076 as a tracer. 
Spray Mixture - Dye 3 6 Pounds. 
DDT =150 pounds. 
Mixed to 144'gals, n2 diesel fuel oil and 36 gals 
Barrett's heavy solvent. 
Dye to pDT ratio - . 
Line - Lines A and D - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart, (See drawing). 
Wind Velocity - 5 MPH. 
RESULTS IN Mg PER SQUARE METER 
Station 
Line A 
lag* DDT Per Sq. Meter. 
Line B 
Station DDT Per Scmare Meter 
WA 1 
10.3 
WB 1 
.7 
3 
3 
3 
.9 
5 
2.1 
5 
2.1 
7 
4 
7 
4 
9 
1.9 
9 
5.6 
11 
2.3 
11 
9.9 
13 
26.1 
13 
6.6 
15 
24-9 
15 
4.7 
17 
83.8 
17 
1.2 RESTRICTED 
THIRD EVENT - NO 4 
Date - 7 March 1945. 
Test No. - 4 
Tank Used - British 3.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 300 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 1600 
Object - To determine density of DDT contamination, using du Pont oil red 
dye #5076 as a tracer. 
Spray Mixture - Dye = 6 Pounds, 
DDT m 150 pounds. Mixed to 144 gals. No. 2 diesel fuel 
oil and 26 gals. Barrett's heavy solvent 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart, (See drawing). 
Odd numbered stations - 50 yards apart. (See drawing), 
V/ind Velocity - 8 MPH. 
RESULTS IN Mg PEE SQUARE METER 
Station 
Line A 
Mg, DDT Per Sq. Meter. 
Station 
Line B 
Mg DDT Per Square Meter 
1 
1.4 
1 
4.4 
3 
5.5 
3 
4. 
5 
7.7 
5 
5.5 
7 
10.6 
7 
5.5 
9 
12.2 
9 
6.2 
11 
21.4 
11 
19.7 
13 
19.5 
13 
23.5 
15 
56.9 
15 
38.1 
17 
32.9 
17 
16. 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 5 
Date - 12 January 1945* 
Test No. - 5 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 150 feet. 
Airspeed - 200 MPH. 
Airplane - A-20G. 
Time of Flight - 1612 hours. 
Object - To determine density of DDT contamination, using du Pont oil red 
dye #5076 as a tracer. 
Spray Mixture - Dye = 561.5 mg/100 ml. 
DDT = 5% (26 lbs. corrected to 25 lbs.) 
Made to 55 gallons with #:2 diesel fuel oil. 
Dye to DDT ratio - 1:9.62. 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart (See drawing). 
Wind velocity - 8 MPH at 2 meters. 
RESULTS IN Mg PER SQUARE METER 
Station 
Line A. 
Mg DDT Per Square Meter 
Line 
Station 
B. 
Mg DDT Per Square Meter 
1 
0.3 
1 
4*8 
3 
0.4 
3 
5.5 
5 
•4.0 
5 
5.7 
7 
2.0 
7 
6.2 
9 
8.3 
9 
11.6 
11 
3.6 
11 
14.2 
13 
0 
13 
4.7 
15 
0 
15 
0 
17 
0 
17 
0 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 6 
Date - 1 March 1945. 
Test No. - 6 
Tank Used - British S.G.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 150 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 1523. 
Object - To determine density of DDT contamination, using du Pont oil 
red dye #50?6 as a tracer. 
Spray Mixture - Dye m 4 pounds. 
DDT = 52 pounds. 
Mixed to 120 gals. No, 2 Diesel fuel oil. 
Dye to DDT ratio - 
Line Data - Lines A and B — yards apart. (See drawing). 
Odd numbered stations - 50 yards apart. (See drawing). 
■Vind Velocity - 4 KPH. 
RESULTS IN Mg PER SQUARE METER 
Station 
Line A 
Ife. DDT Per Sq. Meter 
Line B 
Station Mg DDT 
Per Square Meter 
1 
31.2 
1 
43.1 
3 
36.9 
3 
13.1 
5 
9.6 
$ 
8.7 
7 
2,8 
7 
3.2 
9 
3.9 
9 
0.4 
11 
2.4 
11 
1.3 
13 
2. 
13' 
.9 
15 
1. 
15 
.3 
1? 
1. 
17 
1.7 
restricted THIRD EVENT - No. 7 
Date - 27 January 1945. 
Test No. - 7 
Tank Used - British 3.C.I. (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 150 Feet. 
■ Airspeed - 200 1PH* 
• Airplane - A-20G. 
Time of Flight - 1503 hours. 
Object - To determine density of DDT contamination, using DuPont.oil red 
dye ,75076 as a tracer. 
Spray Mixture - Dye s 645 mg/100 ml, 
DDT * 10% (25 lbs.) 
Made to 30 gallons with HZ diesel fuel oil 
Dye to DDT ratio - 1 = 15*5 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Wind Velocity - 10 MPH at 2 meters. 
RESULTS 
IN Ife PER SQUARE IETER 
Line A 
Line B 
Station 
Mg. DDT Per Sq. 
Meter 
Station Mg DDT 
Sauare Meter 
97.0 
1 
36.7 
3 
20.5 
3 
50.9 
7.7 
5 
22.5 
4.2 
7 
13.7 
9 
5.3 
9 
6.1 
11 
4.7 
11 
4.9 
13 
6.5 
13 
3.7 ' 
15 
3.2 
15 
0.9 
. 17 
1.2 
17 
0.3 RESTRICTED 
THIRD EVENT - NO 8 
Date - 7 March 1945* 
Test No, - 8 
Tank Used - British 3.C.I. (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 150 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 1440 
Object - To determine density of DDT contamination, using du Pont oil red 
dye #5076 as a tracer. 
Spray Mixture - Dye = 6 pounds. 
DDT - 150 pounds. Mixed to 144 gals. No. 2 diesel fuel oil, 
and 36 gals. Barrett’s heavy solvent. 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart. (See drawing). 
Wind Velocity - 10 MPH. 
RESULTS IN Mg PER SQUARE METER 
Station 
Line A 
Mg. DDT Per Sq. Meter. 
Station 
Line B 
Mg DDT Per Square Meter 
1 
1.9 
1 
0.5 
3 
2.3 
3 
0.7 
5 
0.5 
5 
0.5 
7 
0.7 
7 
0.9 
9 
1.6 
9 
0.2 
11 
3.3 
11 
0.7 
13 
1.2 
13 
1.2 
15 
1.6 
15 
1.6 
17 
6.8 
17 
2.1 
RESTRICTED RESTRICTED 
THIRD EVENT - MO 9 
Date - 7 March 1945. 
Test Mo. - 9 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 150 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 1511 
Object - To determine density of DDT contamination, using du Pont oil red 
dye y50?6 as a tracer. 
Spray Mixture - Dye = 6 Pounds, 
DDT = 150 pounds. Mixed to 144 gals. No. 2 diesel fuel 
oil, and 36 gals. Barrett’s heavy solvent 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart.. (See drawing). 
Odd numbered stations - 50 yards apart. (Sej drawing). 
Wind Velocity - 10 MPH. 
RESULTS IN Mg PER SQUARE METER 
Line A 
Line B 
Station 
Mg.DDT Per Sq. Meter 
Station 
Mg DDT Per Square Meter 
1 
4.0 
1 
1.2 
3 
2.3 
3 
1.2 
5 
1.4 
5 
1.9 
7 
0.9 
7 
1.4 
9 
' 3.0 
9 
0.7 
11 
7.0 
11 
1.6 
13 
5.6 
13 
0.5 
15 
6.1 
15 
2.6 
17 
4.9 
17 
0.7 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 10 
Date - 1 March 1945• 
Test No. - 10 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
-Altitude - 50 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 1405. 
Obiect - To determine density of DDT contamination, sing du Pont oil red 
dye #5076 as a tracer. 
Spray Mixture - Dye - 4 pounds. 
DDT = 52 pounds. 
Mixed to 120 gals, #2 diesel fuel oil. 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart. (See drawing). 
Wind Velocity - 2 MPH. 
RESULTS IN Mg PER SQUARE METER 
Line A 
Line B 
Station 
Mg. DDT Per Sq. Meter. 
Station 
Mg DDT Per Square Meter 
1 
1.0 
1 
1.0 
3 
0.8 
3 
1.1 
5 
0.8 
5 
0 
7 
0.5 
7 
0.2 
9 
0.4 
9 
0.2 
11 
0.2 
11 
0.3 
13 
0 
13 
0.3 
15 
0 
15 
0.3 
17 
0 
17 
0.2 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 11 
Date - 1 March 1945. 
Test No, - 11. 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 50 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 1455 
Object - To determine density of DDT contamination, using du Pont oil red 
dye #5076 as a tracer. 
Spray Mixture - Dye = 4 pounds. 
DDT 9 52 pounds. Mixed to 120 gals. #2 diesel fuel oil 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered-stations - 50 yards apart. (See drawing). 
Wind Velocity - 6 MPH. 
RESULTS IN Mg PER SQUARE METER 
Station 
Line A 
Mg. DDT Per Sq. Meter 
Station 
Line B 
Mg DDT Per Square Meter 
1 
21.3 
1 
3.5 
3 
5. 
3 
1.1 
5 
0.9 
5 
1.0 
7 
1.0 
7 
0.4 
9 
0.5 
9 
0.5 
11 
0.3 
11 
0.3 
13 
1.3 
13 
0.4 
15 
0.5 
15 
0.3 
17 
0 
17 
0.3 
RESTRICTED RESTRICTED 
THIRD EVENT - NO 12. 
Date - 3 March 1945 • 
Test No. - 12 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb. tank. 
Altitude - 50 feet. 
Airspeed - 200 HPH. 
Airplane - A-26B 
Time of Flight - 1455* 
Object - To determine density of DDT conta-mination, using du Pont oil 
red dye as a tracer. 
Spray Mixture - Dye s 6 pounds, 
DDT = 150 pounds. Mixed to 144 gals. #2 diesel fuel oil, 
and 36 gals. Barrett’s heavy solvent. 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart. (See drawing). 
Wind Velocity - 11 MPH; 
RESULTS IN Mg PER SQUARE METER 
Line A 
Line B 
Station 
Mg. DDT Per Sq. Meter 
Station 
Mg DDT Per Square Meter 
1 
3.5 
1 
1.6 
3 
2.1 
3 
1.9 
5 
0.2 
5 
1.2 
7 
2.1 
7 
1.4 
9 
1.4 
9 
1.4 
11 
2.1 
11 
1.9 
13 
3.3 
13 
5.5 
15 
3.5 
15 
11.1 
17 
1.6 
17 
37.8 
RESTRICTED RESTRICTED 
THIRD EVENT - No 13. 
Date - 3 March 1945. 
Test No. - 13* 
Tank Used - British S.C.I. (Smoke Curtain Installation) 500 lb, tank. 
Altitude - 50 feet. 
Airspeed - 200 MPH. 
Airplane - A-26B 
Time of Flight - 1413* 
Object - To determine density of DDT contamination, using du Pont oil red 
dye #5076 as a tracer. 
Spray Mixture - Dye = 6 pounds. 
DDT - 150 pounds. Mixed to 144 gals. #2 diesel fuel oil, 
and 36 gals, Barrett’s heavy solvent. 
Dye to DDT ratio - 
Line Data - Lines A and B - 200 yards apart. (See drawing). 
Odd numbered stations - 50 yards apart. (See drawing). 
Wind Velocity - 6 MPH. 
RESULTS IN Mg PER SQUARE METER 
Line A 
Line B 
Station 
Mg* DDT Per Sq. Meter 
Station 
Mg DDT Per Square Meter 
1 
3.5 
1 
2.3 
3 
0 
3 
3.0 
5 
2.8 
5 
3.5 
7 
3.7 
7 
5.2 
9 
0.7 
9 
4.2 
11 
16.7 
11 
16.2 
13 
13.9 
13 
17.9 
15 
31. 
15 
21.4 
17 
76. 
17 
61.4 
77 
RESTRICTED RESTRICTED 
THE ARMY AIR FORCES BOARD 
Orlando, Florida 
26 April 1945 
PROJECT DISTRIBUTION LIST 
ARLT AIR FORCES BOARD PROJECT NO. 3735BH725 
DISSEMINATION OF DDT FROL STANDARD BRITISH EQUIPMENT 
QUANTITY 
AAF Board Control Office 12 
AAF Board Files 6 
Field Testing Agency Concerned 1 
Burgeon General, Washington, D, C. $ 
Members of AaF Board (3) 1 
Central Library AAFSAT 1 
CG, AAFPGC (Proof Dept.) * 1 
Director AT3C Area-A 2 
Director ATSC Area-B 6 
RAF 20 
Hq., AAF Library 2 
AAF Board Liaison Officers (4) 5 
AAF Board Liaison Officer ETO 8 
Air Surgeon, Hqs., AAFTAC 2 
Bureau of Entomology & Plant Quarantine, Orlando 2 
78 
RESTRICTED