Stemming

Details Stemming Stemming

1978-05-15

1980-07-29

Brown, David H.

Ammunition and explosives

Igniting devices and systems

102 23, F42D 108

Patent

active

042145325

ABSTRACT:
In mining and quarrying an explosive charge is placed in a shot hole, and the subsequent explosion is contained by stemming. The invention provides stemming made from stemming plugs, each consisting of a self-supporting body made principally of sand bound with the aid of sodium silicate. The plugs are wetted, preferably by immersion in water, and inserted into the shot hole where they are crushed or disintegrated to form the stemming.

REFERENCES:
Ritson et al., Stemming Materials, Safety in Mines Research Board Paper _No. 84, His Majesty's Stationery Off. London, 1934 (pp. 16-30).

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