would fall in the outer receiver, and the whole be cleared and j treated, nor manual labor employed in it, except for packing smelter. The residue is either washed away in " water dress- 1 and attention to the machinery. While the machine will classified, almost without cost. ing," or else left… … PEAECE'S CENTRIFUGAL ORE CONCENTRATOR. rapidity of its action. Through a working model now on ex- ter, it is equally applicable to the coarser grades, and beside 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…
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