| abstract |
Abstract Pumpable Stemming This invention relates to the stemming of boreholes containing explosives. More particularly it relates to a method of stemming a borehole, and to a stemming system suitable for stemming a borehole containing a flowable explosive such as an emulsion explosive. According to the invention, there is provided a method of stemming a borehole having a mouth and a blind end and containing a charge of explosive loaded therein, which method comprises inserting a plug of stemming material from a bulk supply in a flowable state along a conduit into the borehole, between a charge of explosive loaded into the borehole and the mouth of the borehole, and so that it forms a plug which closes off the borehole by engaging the wall of the borehole. |