§ 42. Sir Percy Hurdasked the Minister of Fuel and Power whether he is aware that Soviet scientists and mining experts, etc., and notably Professor I. Bardin, of the Union of Soviet Socialist Republics Academy of Science, claim that the problem of the underground gasification of coal has been solved, and that, as a result of full-scale Government tests, begun in 1938, plants are now being worked successfully at Gorlovka, in the Donetz basin and at Lisiskansk, thus releasing underground miners and transport workers for other services above ground; and whether his Department has made experiments of this nature?