32. Mr. Whiteleyasked the Secretary for Mines the steps taken by the Mining Research Board to prevent blown-out shots; and what method they have recommended for this purpose?
§ Captain CrookshankThe prevention of blown-out shots depends on the proper placing, charging and stemming of the shot-holes, and the Safety in Mines Research Board recommends for use as stemming material a mixture of sand and clay as described in their Paper No. 84, a copy of which I am sending to the hon. Member.
§ Mr. R. GibsonHave the board considered the question of dispensing with the use of explosives and using pneumatic or hydraulic methods instead?
§ Captain CrookshankI cannot possibly say offhand all the methods which the Safety in Mines Research Board are considering, but I have answered the question which was on the Paper.
§ Mr. GibsonThat is the question on the Paper.