Current Mining Coal Developments Committee Division C. I. M.; Multiple Shooting in Canadian Coal Mines

THE CANADIAN use of short-period delay-action detonators in coal shooting has been carried on for about two years, mostly in British Columbia, and this is a preliminary report on progress to date. Entire coal faces are being shot successfully with one application of electric current.
Keywords: blasting, blasting cap, British Columbia, carbon monoxide, P ass Coal Company, West Canadian Collieries, British Columbia, Canadian, Coal, Limited, Mine, Mines, mining
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