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Scientific American, Vol. 20, No. 9 (1869) (1869)

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An illustration from Scientific American, Vol. 20, No. 9 (1869), 1869, leaf 0
| treated, nor manual labor employed in it, except for packing would fall in the outer receiver, and the whole be cleared and snielter. The residue is either washed away in “‘ water dress- ‘and attention to the machinery. While the machine will classified, almost without cost. ing,” or else left… … ‘The difficulties which stand in the way of a complete sep- hibition at 32 Dey street, in this city, iron ore has been passed the metallic ores all other mineral or granular substances can aration of the metals from the rock are mainly these two: with etfect at the rate of ten tuns per hour, and it…

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