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Scientific American, Vol. 86, No. 19 (May 1902) (1902)

leaf 5

An illustration from Scientific American, Vol. 86, No. 19 (May 1902), 1902, leaf 5
used An apparatus in which ashes may be sifted indoors Here the material is partially dried by heat. The next daily. without raising a dust in the room has been invented stage in the process is to convey this dried material The loss of gold in the final tailings from a free- by Mr. G. J. Le Brake,… … cubic yards capacity, having walls of masonry covered very much the subject of Congressional interest. For with paper, the air will be changed at the rate of one- that reason the report of the committee on the bill A DUSTLESS ASH-SIFTER. fortieth of its volume per deg. C. per hour. When providing…

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