§ Mr. MANDERasked the Secretary for Mines what steps are being taken to overcome the danger created in mines by 649W inability to hear the cracking of the roof owing to the noise made by electric cutting-machines?
§ Mr. TURNERThis point is bound up with much larger questions of roof-control and support in machine mining generally which are receiving the close attention of the Inspectors of Mines and the Safety in Mines Research Board.