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Scientific American, Vol. 64, No. 19 (1891) (1891)

leaf 7

An illustration from Scientific American, Vol. 64, No. 19 (1891), 1891, leaf 7
l quantity of stuff mented with by prominent and capable men, who be- least three feet below the track to clean low bedrock, with from lin. to 3 in. of supply, by using the water lieve that money can be made from the bars and other and at times cut its way through high bedrock. The over and over,… … matically opens ar.d closes at the proper points. The this connection we illustrate and describe & process that illustrated has been worked near Denver for several has been before the public for some time in California weeks on less than a miner’s inch of supply. Where weight of a No. 1 dredge,…

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