§ Mr. POTTS
asked the Secretary for Mines whether, seeing that the colliery explosion at Maltby, Yorkshire, could not have happened had the minerals been worked upon the retreating system, he will consider amending the Coal Mines Regulation Act, embodying statutory obligation to do so in future sunk mines of this country?
§ Mr. SHINWELL
I would refer my hon. Friend to the answer I gave him last week, to which I may add that I am advised that it is by no means impracticable to deal with the danger of spontaneous combustion of coal effectively under other methods of working than the retreating system.