HC Deb 01 March 1938 vol 332 c897
24. Mr. Whiteley

asked the Secretary for Mines whether he has considered the representations made to him as to the value of the Voortman shot-firing appliance which is inserted in the drilled hole before stemming; and will he make a statement?

Captain Crookshank

This is one of a variety of methods by which it is sought to improve the safety and efficiency of

South Wales and Monmouthshire.
Year Average Number of Persons employed in and about coal mines (including Clerks and Salaried Persons). Output of Saleable Coal. Output of Saleable Coal per manshift worked.
Tons. Cwts.
1927 … … … … 194,100 46,256,363 19.52
1928 … … … … 168,269 43,311,966 20.23
1929 … … … … 178,315 48,149,613 20.46
1930 … … … … 172,870 45,107,912 19.98
1931 … … … … 158,162 37,084,852 19.40
1932 … … … … 145,709 34,874,302 19.36
1933 … … … … 142,900 34,354,884 19.51
1934 … … … … 139,806 35,173,317 19.83
1935 … … … … 131,697 35,025,110 20.40
1936 … … … … 126,233 33,886,179 20.82
1937 … … … … 135,900* 38,245,500* 20.59†
*Provisional. † †Nine months.