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009609

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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009609.jpg
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Irish Photo Archive
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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.