Coking Coal Stocks Mr. Eddie Griffiths asked the Minister for Energy what tonnages of coking coal are in stock at pitheads and held by the British Steel Corporation, respectively. Mr. Emery At 26th January 1974 the National Coal Board held 01 million tons of coking coal and the British Steel Corporation held just over 1ยท3 million tons; obviously there is some unevenness in the distribution of these stocks.