HC Deb 22 February 1977 vol 926 c567W
Mr. Forman

asked the Secretary of State for Energy what are the figures in each year since 1945 for average output per manshift in the coal industry; and what have been the corresponding figures for the 20 collieries with the best productivity record and the 20 collieries with the worst productivity record.

Mr. Eadie

The information on average output per manshift in the coal industry is available only from 1947 on a consistent basis. The figures are as follows:

Year Average OMS (cwts)
1947 21.5
1948 22.3
1949 23.4
1950 24.2
1951 24.5
1952 24.2
1953 24.6/24.9*
1954 24.9
1955 24.7
1956 24.8
1957 24.9
1958 25.6
1959 26.9
1960 28.0
1961 28.9
1962 31.2
1963 33.0
1964 34.4
1965 35.9
1966 36.4
1967 38.2
1968 41.7
1969 43.5
1970 44.1
1971 43.9
1972 43.6
1973 45.0
1974 42.8
1975 44.9
1976 43.8

Statistics on the 20 collieries with the best and worst productivity records are not readily available since the composition of the two groups does not remain constant over time.

* 1953 figures adjusted to new definitions introduced in 1954.