HC Deb 22 February 1934 vol 286 c508

asked the Secretary for Mines the number of pneumatic boring machines used for boring stone in the South Wales coalfield and the number in use in the United Kingdom?

The SECRETARY for MINES (Mr. Ernest Brown)

The figures for 1932, which are the latest available, show a total of 5,730 pneumatic drills in use at mines under the Coal Mines Act: 1,073 of these were in use in South Wales. I regret I cannot give any figures as to the extent to which these drills are used in the boring of stone or otherwise.