Statistics of Mines and Mining in the States and Territories West of the Rocky Mountains, Volume 3

amalgam amount antimony Arizona arrastras assay average bullion Burnt River California Cañon carried cent chloride City claims Clear Creek County Colorado contains copper cost country rock County Creek crushing cupellation deposits depth ditch east employed Eureka expense extracted feet deep feet wide furnace galena Gilpin County gold and silver Gold Hill granite Grass Valley gravel ground Gulch hundred hydraulic inches iron iron pyrites labor latter lead ledge limestone located lode metal miles mill miners Mining Company mining districts months mountain Nevada northeast opened operations ounces owners oxides pans Pine placer mines plates porphyry portion pounds present pulp pyrites quantity quartz quicksilver reduced reported rich River roasting rock salt San Francisco shaft Sierra slag slates smelting southwest stamps Steam stoping sulphate sulphurets surface tailings tion tons Total tunnel vein Wickenburg width yield zinc