§ Dr. Roger Thomasasked the Secretary of State for Energy what were in each year between 1955 and 1979 (a) the output for each type of coal mined in Wales, (b) the percentage of each type of coal mined by opencast methods and (c) the numbers of miners involved in producing each type of coal.
§ Mr. John MooreThis is a matter for the National Coal Board. I am asking the chairman to write to the hon. Member.