HC Deb 06 December 1934 vol 295 c1846W
Mr. LAWSON

asked the Secretary for Mines the number of pneumatic picks in use, or the number of collieries using the same, for Great Britain, with separate figures for Durham, for the years 1927, 1923, 1929, 1930, 1931, 1932 and 1933?

Mr. E. BROWN

The information is as follows: