VICTORIA — The British Columbia government has approved an amended environment assessment certificate for block-caving at the Red Chris Mine, the same site where three workers were trapped last July.

BHP is continuing to invest in processing plant capacity to enable an uplift in throughput to seven-million tonnes a year.

Granular flow mechanics in underground mining addresses the movement and interaction of fragmented rock as it drains through voids created by caving, drawing or blasting. These flows exhibit complex ...