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Ground level and subterranean views of three mine shafts and a tunnel; variations on open and enclosed pulley systems at entrance to the shafts, and cut-away views showing men working within the shafts and tunnel.
Copyright:
The National Library of Medicine believes this item to be in the public domain. (More information)
Related Title(s):
Is part of: Georgius Agricola De re metallica, Bk. V, p. 103.; (DNLM)56530690R