Documents from the G. M. Colvocoresses mining collection. Description: Notes by Colvocoresses, excerpts from Mining Journal The Mercuria Mining Corporation, correspondence, memo regarding Mercuria Mine, cross section sketch of the mine, geologic map of Pine Mountain, report on Pine Mountain Mercury Claims by Colvocoresses, Mazatzal Mountains Mercury Deposits by Gohring, report with assays by Lausen, report of assays by Winber, TRS map, report by Eckert, excerpts from The Mining Journal, Attrition Concentration of Quicksilver Ores, First Floatation Plant Installed in Platteville Zinc District, Concentrator Methods and Costs at Hayden Plant, Subsidence and Ground Movement in Copper Mines of the West, A Method for Determination of Cadium [...]
