asked the Secretary of State for Energy (1) if he will publish a table showing the number of (a) National Coal Board and (b) other coal mines, operating in Wales for each year since 1966; and what was the total tonnage of saleable mined coal extracted in Wales for each of these years;
(2) what are the tonnages for each year since 1966 of coal extracted from Wales which has been sold to the iron, steel and coking industries; and what proportion each of these tonnages has represented of total sales of Welsh coal for each of those years;
(3) what has been the tonnage of coal extracted from Wales that has been sold to the Central Electricity Generating Board in each year since 1966.
These are matters for the National Coal Board, and I have asked the chairman to write to the hon. Member.