Table of ContentsLateral DevelopmentLevel IntervalSizes of Drifts & CrosscutsCost of Driving Drifts & CrosscutsPlan Of Level Lay-Out Lateral Development In tabular, dipping lodes and thick massive
Table of ContentsExperimentsSeries ASeries BSeries CSeries DSeries ESeries F Refiners of lead by the Parkes process have always been solicitous of recovering the zinc used
Table of ContentsThe Tennessee Coal, Iron & Railroad Co.’s PlantThe Dominion Iron & Steel Co.’s PlantThe Bethlehem, Steel Co.’s PlantThe Pennsylvania Steel Co.’s PlantGeneral RemarksDiscussion
Conventional mine shaft sinking methods involve the performance of a cycle of different operations—drilling and blasting, removal of smoke and cleaning of fly-rock lodged on
Costs of sinking a mine shaft vary with the size and depth of the shaft; nature of the rock (the ease with which it can
The technical literature is replete with descriptions of and data on shaft sinking equipment, methods and costs. The subject of shaft sinking has been discussed
Cupellation is well known to be one of the most effective methods of separating silver and gold from base metals and other impurities, as well
Table of ContentsMining EquipmentMechanical LoadersScrapersShovel loadersTransportation equipmentVentilating equipmentMethods of Driving AditCost of Driving an Entrance to an Underground Mine Although practices in vogue for many years
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Table of ContentsHydrogen Sulphide in Precipitating CopperAnalysis of Matte and FeSSponge Iron Copper Precipitation MethodSulphur Dioxide Copper PrecipitationReduction of Cuprous ChloridePrecipitation with Sponge IronReduction with Coke
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