Stock Photo: Draining mine workings by means of a battery of three pumps. The axle, B, is powered by an overshot water wheel. The cams on the axle raise and lower the piston rods by means of tappets. C is the bottom of the pipe which is encased in the basket, D. From De re metallica, by Agricola, pseudonym of Ge

Draining mine workings by means of a battery of three pumps. The axle, B, is powered by an overshot water wheel. The cams on the axle raise and lower the piston rods by means of tappets. C is the bottom of the pipe which is encased in the basket, D. From De re metallica, by Agricola, pseudonym of Ge : Stock Photo

1746-1921 | Rights Managed
Credit: World History Archive / World History Archive
Category: Illustrations
009607-p

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Property Release: No

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