Tungsten Carbide Drilling at the Sullivan Mine
J. W. REYNOLDS
THE Sullivan mine, at Kimberley, B.C., is the principal source of ore for the Consolidated Mining and Smelting Company of Canada, Limited. Current production amounts to about 2,500,000 tons of lead-zinc ore a year. With approximately 1,600,000 feet of percussion drilling and 700,000 feet of diamond drilling being carried on each year, any improvements in drilling practice are important.
argillite, chert, percussion, steel, Tungsten Carbide Drilling, Bits, Cost, Costs, Drill, Drills, steel, Steels, test, Tests