Tungsten Carbide Bits at the Britannia Mine
P. W. BILL WILLER
The Britannia Mining and Smelting Company, Limited, have replaced diamond drills with percussion drills and tungsten carbide bits for most of their blast hole drilling operations and have thereby reduced ore breaking costs. Two-inch Carset bits .are used, with one-inch hexagonal Atlas Chippewa alloy steel in 3-foot .and 6-foot lengths. Locally made couplings of Atlas SPS 245 alloy steel connect the rods.
alloy steel, Atlas SPS, diamond drilling, hexagon, tungsten carbide, Bits, Cost, Costs, Drilling, steel, Steels, Tungsten carbide, Water, Waters