§ 38. Mr. PALINGasked the Secretary for Mines the number of pits in Great Britain where electric lamps are used underground; and the approximate number of men using such lamps?
§ Colonel LANE FOXAt the end of 1924 there were 356,817 electric safety lamps in use, practically all of them underground, at 1,012 mines. I cannot give even an estimate of the number of men who use these lamps.