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Densmore Consolidated Gold Mining Co. Assay Ephemera 1901-1903 [166986]

Currency:USD Category:Collectibles / Mining Start Price:100.00 USD Estimated At:200.00 - 300.00 USD
Densmore Consolidated Gold Mining Co. Assay Ephemera  1901-1903  [166986]

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Lot of 6. The Densmore Mine contains 59 acres extending southeastward from Stanislaus River up the steep east slope of the canyon to the Columbia and Parrotts Ferry road 2 miles from Columbia. The gold is principally associated with pyrite, marcasite, galena, and other sulfides. The first reported production was in 1899-1900 by William Francis, who shipped rich sulfide ore that yielded $26,000. Hayward and Lane and Densmore Consolidated Mining Company worked the mine from 1900 to 1906, and used a 14-stamp mill, concentrators, and cyanide plant to treat ore from a shoot about 200 feet long and 400 feet deep, which was found in No. 3 adit, connecting with a shaft 500 feet deep. About 19,000 tons was produced during this period. From then until _x000D_
1936, the workings were extended but little ore was milled. 1) 1901 letterhead for ores worked January 1901. 2-3) Two Reduction Works Reports, March and April 1901. Lists results for Ore, Sulphurets, and Tailings. 4-5) Two Memorandums of Gold Bullion, 1902 and 1903. Results range in gold fineness from 344-740. 6) 1901 Assay Report for Mill Sulphurets and Tailings. Columbia California Franklin Collection