Appendix to the Journals of the Senate and Assembly of the session of the Legislature of the State of California (1917) (14597456898)

Identifier: appendixtojourna19177cali (find matches)
Title: Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California
Year: 1853 (1850s)
Authors: California. Legislature
Subjects: Legislative journals
Publisher: Sacramento : State Printing
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library



Text Appearing Before Image:
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 29.045 feet.
Text Appearing After Image:
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 hours.The calcines are trammed from )\IcDougall roasters in li-ton cars totwo (23x66) reverberatory furnaces having a smelting capacity of