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NCB Employment
NCB Employment
Metal Bridge Drift
NCB Employment
Year
Total
Below
Above
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
165
146
19
1957
165
146
19
1958
244
215
29
1959
244
215
29
1960
235
208
27
1961
104
95
9
1962
1963
1964
120
109
11
1965
135
123
12
1966
1967
131
121
10
1968
214
203
11
1969
203
194
9
1970
207
195
12
1971
209
197
12
1972
226
212
14
1973
212
198
14
1974
212
198
14
1975
328
307
21
1976
339
319
20
1977
344
322
22
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
Year
Total
Below
Above
main page for Metal Bridge Drift
Sources:
1956 Guide to the Coalfields published by the Colliery Guardian
1957 Guide to the Coalfields published by the Colliery Guardian
1958 Guide to the Coalfields published by the Colliery Guardian
1959 Guide to the Coalfields published by the Colliery Guardian
1960 Guide to the Coalfields published by the Colliery Guardian
1961 Guide to the Coalfields published by the Colliery Guardian
1964 Guide to the Coalfields published by the Colliery Guardian
1965 Guide to the Coalfields published by the Colliery Guardian
1967 Guide to the Coalfields published by the Colliery Guardian
1968 Guide to the Coalfields published by the Colliery Guardian
1969 Guide to the Coalfields published by the Colliery Guardian
1970 Guide to the Coalfields published by the Colliery Guardian
1971 Guide to the Coalfields published by the Colliery Guardian
1972 Guide to the Coalfields published by the Colliery Guardian
1973 Guide to the Coalfields published by the Colliery Guardian
1974 Guide to the Coalfields published by the Colliery Guardian
1975 Guide to the Coalfields published by the Colliery Guardian
1976 Guide to the Coalfields published by the Colliery Guardian
1977 Guide to the Coalfields published by the Colliery Guardian
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