. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Campo Seco smelter of Penn Mining Company, Campo Seco, Calaveras County, California, showing No. 3 shaft and leaching tanks. There are eleven levels 150 feet apart, with drifts north and south onthe vein. No. 2 shaft on west vein has been sunk to a depth of 750 feet,having nine levels 100 feet apart, with drifts both north and south onthe vein. Shaft No. 3 is about 1300 feet north of shaft No. 2. The totalamount of underground workings is Campo Seco smelter of P
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. Campo Seco smelter of Penn Mining Company, Campo Seco, Calaveras County, California, showing No. 3 shaft and leaching tanks. There are eleven levels 150 feet apart, with drifts north and south onthe vein. No. 2 shaft on west vein has been sunk to a depth of 750 feet,having nine levels 100 feet apart, with drifts both north and south onthe vein. Shaft No. 3 is about 1300 feet north of shaft No. 2. The totalamount of underground workings is Campo Seco smelter of Penn Mining Company, Campo Seco, Calaveras County, California,shewing crushing plant, bedding bins and roasters. CALAVERAS COUNTY. 61 Reduction jjlant: The ore is hauled from mine bins in 5-ton cars by25-ton locomotive to crushing plant, where the ore is crushed by No. 3type D Gates gyratory crusher to 1J-inch size; crushed product iselevated to 18x72 trommel and screened to f-inch size, oversize fromtrommel to 24x36 ]\IcFarland rolls, fines conveyed to bedding binshaving a capacity of 2100 tons. Product from rolls elevated to 18x24trommel, screened to J-inch size, the oversize to 12x24 rolls,rescreened and fines convej^ed to bedding bins by 12-inch Robins beltconvcAor. The ore is trammed from bedding bins to 8 McDougallroasting furnaces, capacity being 140 tons per twenty-four calcines are trammed from ]\IcDougall roasters in li-ton cars totwo (23x66) reverberatory furnaces having a smelting capacity of
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Keywords: ., bookauthorcaliforn, bookcentury1800, bookdecade1850, bookyear1853
