CIM Bulletin, Vol. 71, No. 792, 1978

Gillyeard J. Leathley, General Mine Superintendent, Cassiar Asbestos Corporation Limited, Cassiar, B.C.

The Cassiar Asbestos mine is situated on McDame Mountain in northern B.C. at a mean elevation of 6000 ft (1830 m), some 6 miles (9.6 km) from the townsite/mill complex. Asbestos ore production averages 1,200,000 tons at 9% R.M.G. (Recoverable Mine Grade) and waste production is 6,000,000 cu. yd annually. Waste is loaded by P&H 1900 AL 11-cu.-yd shovels and transported by 75-ton and 85-ton end-dump trucks to the waste dumps. The ore is loaded by a 992 Caterpillar 10-cu-yd front-end loader into 50-ton and 75-ton trucks, which transport it to the crushing plant located at the mine. The ore is transported by a 15,370-ft (4685-m) tramline to the mill complex.
Keywords: Cassiar mine, Asbestos, Open-pit mining, Drilling, Blasting, Lauding, Haulage, Mining methods, Dewatering, Crushing.