Given, that on a coal or lignite field, or at a waterfall, 100 horse-power is developed by the combustion of fuel or by the fall of water driving a turbine, this power can be electrically transmitted to a mine or GROUP OF MINES, say 100 miles away, with only a loss of some 30 horse-power. For twenty miles the loss on transmission should not exceed 15 horse-power so that 70 and 85 horse-power respectively are available at the mines. No other system offers such remarkable efficiencies of power transmission. The new Multiphase Alternating Electric Generating and Power Transmission System is indeed so perfect as to leave practically no margin for improvement. The multiphase electric motor can be directly applied to the stamp battery and ore-breaker driving-shaft and to the shaft of the amalgamating pans. APPROXIMATE POWER REQUIRED TO DRIVE THE MACHINERY OF A MINE. Rock breaker 10 effective horse-power Amalgamating pan 5 effective horse-power Grinding pan 6 effective horse-power Single stamp of 750 lb. dropping 90 times per minute 1.25 effective horse-power Settlers 4 effective horse-power Ordinary hoisting lift 20 effective horse-power Allow 10 per cent in addition for overcoming friction. Besides this electrical distribution power, which should not cost more than three farthings per effective horse-power per hour, the electrical energy can be employed for lighting the drives and the shafts of the mine. The modern electrical mine lamps leave little to be desired. Also it is anticipated that once the few existing difficulties have been surmounted electric drilling will supplant all other methods. Electric power can be employed for pumping, for shot firing, for hauling, and for innumerable purposes in a mine. Electricity lends itself most advantageously to so many and varied processes, even in accelerating the influence of cyanide solutions on gold, and in effecting the magnetic influence on metallic particles in separating processes; while applied to haulage purposes, either on aerial lines or on tram or railroads, it is an immediate and striking success.