HC Deb 18 May 1971 vol 817 c270W
Mr. Strang

asked the Secretary of State for Trade and Industry how many tons of coal were produced per man on average in Scottish collieries in each year from 1960 to 1970, inclusive.

Mr. Ridley

The figures are:

National Coal Board Collieries in Scotland
Annual output: tons per man
1960 245
1961 248
1962 274
1963 297
1964 302
1965 312
1966 330
1967 354
1968 369
1969 373
1970 365

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