HC Deb 16 June 1936 vol 313 c800
54. Mr. GEORGE HALL

asked the Secretary for Mines whether he can give an estimate of the total potential capacity of all the coal mines now available for production in this country?

Captain CROOKSHANK

During the period of exceptional demand last winter, collieries were producing at the rate, after allowing for holidays, of about 260,000,000 tons per annum. With the re-opening of pits temporarily closed, and the introduction of more labour and more machines, this figure could be materially increased, but the extent of such increase must obviously be a matter of conjecture.