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TABLE PAGE Chapter I History of the Gold Industry of the Rand
Data for Calculating the Probable Value of a Series of Section Values
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angle average banket beds blasting borehole bottom brake Brakpan broken rock cage carbon cent centre compressed air concrete conglomerate cost cross-cut Crown Mines cylinder depth detonator diameter distance drifters drill steel East Rand effect efficiency electric employed engine explosives face footwall furnace gauge gelignite gold hanging wall haulage heat hoisting holes Inclined Shaft jackhammers Johannesburg length loaded lubrication machine Main Reef Leader method miner Modderfontein Native nitro-glycerine obtained operations pebbles pigsties pillars pipe piston plate plumb-bob portion position pressure pump quartzites Randfontein rock drills rope rotation round shaft shank shift side silicosis sinking skip South Africa Springs Mines station stope stope width surface temperature theodolite timber tonnage Transvaal trucks tube underground usually valve varies velocity ventilation vertical shafts waste weight welded West Rand Witwatersrand System