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Scientific American, Vol. 83, No. 1 (1900) (1900)

leaf 7

An illustration from Scientific American, Vol. 83, No. 1 (1900), 1900, leaf 7
mining companies, has made the third floor. By them it is reduced to a pulp, water disintegrated auriferous rock, called ‘ saprolite,” the most progress at this time in the work of erecting being admitted here. This pulp is washed over wer- washing the sand, thus formed, over mercury-covered its… … Some free gold also was caught in the sluice the largest in the United States, and as the plant as a set free. mate and catch the free gold. The remainder is car- whole has been pronounced by competent judges to basins. ried by wooden conduits to the Frue Vanner concen- be the peer in completeness…

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