The Raising of No. 7 Shaft at Britannia Mines
E. C. ROPER
THE Britannia Mining & Smelting Company, Limited, have been operating their property at Britannia Beach, B.C., continuously for nearly forty years and have mined over 33,000,000 tons of ore from orebodies within a belt of highly sheared rocks, five miles long by 2,000 feet wide. The property is in the Coast Range mountains, about twenty miles due north of Vancouver. The mountains rise abruptly from sea level to elevations of 4, 500 feet within a horizontal distance of 7,000 feet. The topography has enabled the orebodies to be developed by adit tunnels.
Chutes, Equipment, hoist, mucking, shaft, Sheaves.-Two, wall plate, Hoists, Installation, Manways, Operation, Raising, service, Services, Shafts