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Scientific American, Vol. 78, No. 4 (January 1898) (1898)

leaf 7

An illustration from Scientific American, Vol. 78, No. 4 (January 1898), 1898, leaf 7
s similar to the first but spaced with bearings at each end of the upper and lower rolls con- mesh screens and allowed to fall in front of a series a IJ^-inch aperture. From these it falls into a third sist of loose sleeves, on the outside of which are seven of three 8-inch magnets. The tailings… … should not be de- the concentrating livered in the mill. This con- iig 2.-THE SAND DUMP-EDISON MAGNETIC CONCENTRATING WORKS. © 1898 SCIENTIFIC AMERICAN, INC.

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