Mine Mechanization and Costs at Copper Mountain
R. S. DOUGLAS
THE operations of The Granby Consolidated Mining, Smelting and Power Company, Limited, have always been concerned with the mining of low-grade copper ores. In the fifty years of this Company's existence, nearly 60,000,000 tons of such material has been successfully mined and treated. During these years, many changes in mining practice took place.
Copper Mountain, Direct Mining Cost, labour, MAN, ore, Cost, Costs, Development, Developments, Labour, Mine, Mines, Ore, Ores