asked the Secretary of State for Energy what is the current deep-mined coal production per man-day in United Kingdom mines; and what were the comparable figures in 1983, 1979 and 1974, respectively.

Deep-mined revenue output per man shift in 1985–86 to 22 June was 2·35 tonnes. Average figure for 1983–84 were 2·43 tonnes, for 1979–80 2·31 tonnes, and for 1974–75 2·29 tonnes.