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Scientific American, Vol. 26, No. 11 (1872) (1872)
leaf 3
ipped in bags to Swansea, Eng- battery in which the stamps are raised and allowed to fall, Turin, and both were constructed, from designs prepared by lund, for separation into the several metals contained. The crushing the ore fine enough to flow through a screen placed the Italian Government… … © 1872 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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