Loading and Blasting a Hot Pillar Remnant

CIM Bulletin, Vol. 70, No. 782, 1977

Roland Hunt, Planning Engineer, and Elmer Pelto, Supervisor, Longhole Drilling, Cominco Ltd., Sullivan Mine, Kimberley, B.C.

This paper deals with the practical problems associated with blasting a heated pillar remnant. This pillar remnant was the final stage in the blasting of a multi-stage pillar blast. Production from, the previous stages had produced burning sulphide ore, resulting in high rock temperatures in the final unblasted stage. This is an account of how, under difficult conditions, the pillar remnant was blasted.
Keywords: Sullivan Mine, Sulphide fires, Pillar remnants, Heated pillars, Loading, Blasting, Underground mining.