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Lord Mason of Barnsley
asked Her Majesty's Government:How many coal mines were operating under the National Coal Board and British Coal during each of the years 1967–1970 and 1984–1987 and to the nearest date in 1988; what was the total manpower in each of those years, and what was the annual output in each of those years and the output per man shift?
Viscount Davidson
The information requested by the noble Lord is as follows:
| Financial year | Deepmined Output (incl. tip coal and capital coal) (m. tonnes) | Output per Man Shift (tonnes) | As at End March | Producing Collieries | Men on Colliery Books('000) |
| 1966–67 | 167·3 | 1·86 | 1967 | 438 | 409·7 |
| 1967–68 | 165·4 | 1·98 | 1968 | 376 | 366·7 |
| 1968–69 | 155·5 | 2·16 | 1969 | 317 | 318·7 |
| 1969–70 | 142·1 | 2·21 | 1970 | 299 | 295·7 |
| 1983–84 | 90·1 | 2·43 | 1984 | 170 | 181·1 |
| 1984–85 | 27·6 | 2·08 | 1985 | 169 | 171·4 |
| 1985–86 | 88·4 | 2·72 | 1986 | 133 | 138·5 |
| 1986–87 | 88·0 | 3·29 | 1987 | 110 | 107·7 |
| Financial Year to 6.2.1988 | 71·2 | 3·61 | As at 62.1988 | 102 | 99·3 |