Stock Photo: Draining a mine using a duplex suction pump. The box ABCD, shown in detail on the right, contained the crank which operated the piston. From De re metallica, by Agricola, pseudonym of Georg Bauer (Basle, 1556). Woodcut.
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Image Number: 1746-1923 Rights Managed Credit:World History Archive
009609-p Model Release: No Property Release: No