METHOD AND APPARATUS FOR BLASTHOLE STEMMING

摘要

A device and process for plugging an explosives blasthole, the device having an inner member (7a, 7b) in the form of a conduit having a valve (9) and being adapted for the passage of fluid bulk explosives and an outer member (1) adapted to engage the walls of the blasthole. The outer member may be made of deformable material or be inflatable. The inner and outer members may be detachable.