UNITED STATES
DEPARTMENT OF LABOR
DEPARTMENT OF LABOR
Historical Data 1931 - 1977 Bituminous Mines in the United States |
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TABLE 12B. - Count of operations, by general work location, at bituminous coal mines in the United States, 1931-77 Underground mines Total Year underground Underground Surface mining 1931 NA NA NA 1932 NA NA NA 1933 NA NA NA 1934 NA NA NA 1935 NA NA NA 1936 NA NA NA 1937 NA NA NA 1938 NA NA NA 1939 NA NA NA 1940 NA NA NA 1941 NA NA NA 1942 NA NA NA 1943 NA NA NA 1944 NA NA NA 1945 NA NA NA 1946 NA NA NA 1947 NA NA NA 1948 7,633 - 7,633 1949 6,968 - 6,968 1950 6,923 - 6,923 1951 7,792 - 7,792 1952 7,178 - 7,178 1953 6,783 - 6,783 1954 6,270 - 6,270 1955 6,845 - 6,845 1956 7,293 - 7,293 1957 7,078 - 7,078 1958 7,381 - 7,381 1959 7,101 - 7,101 1960 7,392 - 7,392 1961 6,796 - 6,796 1962 6,899 - 6,899 1963 7,082 - 7,082 1964 6,410 - 6,410 1965 6,229 - 6,229 1966 5,243 - 5,243 1967 4,449 - 4,449 1968 3,850 - 3,850 1969 3,450 - 3,450 1970 3,053 - 3,053 1971 2,281 - 2,281 1972 1,534 - 1,534 1973 1,342 - 1,342 1974 1,402 - 1,402 1975 1,633 - 1,633 1976 1,908 - 1,908 1977 2,067 - 2,067 1/ Always associated with underground for count. NA Not available. Total Year Strip Auger Culm Dredges surface Total banks mining mining 1931 NA NA NA NA NA NA 1932 NA NA NA NA NA NA 1933 NA NA NA NA NA NA 1934 NA NA NA NA NA NA 1935 NA NA NA NA NA NA 1936 NA NA NA NA NA NA 1937 NA NA NA NA NA NA 1938 NA NA NA NA NA NA 1939 NA NA NA NA NA NA 1940 NA NA NA NA NA NA 1941 NA NA NA NA NA NA 1942 NA NA NA NA NA NA 1943 NA NA NA NA NA NA 1944 NA NA NA NA NA NA 1945 NA NA NA NA NA NA 1946 NA NA NA NA NA NA 1947 NA NA NA NA NA NA 1948 1,786 NA - - 1,786 9,419 1949 1,771 NA - - 1,771 8,739 1950 1,894 NA - - 1,894 8,817 1951 1,887 NA - - 1,887 9,679 1952 1,816 NA - - 1,816 8,994 1953 1,827 NA - - 1,827 8,610 1954 1,664 NA - - 1,664 7,934 1955 1,711 120 - - 1,831 8,676 1956 1,740 213 - - 1,953 9,246 1957 1,765 274 - - 2,039 9,117 1958 1,779 299 - - 2,078 9,459 1959 1,676 308 - - 1,984 9,085 1960 1,608 347 - - 1,955 9,347 1961 1,568 327 - - 1,895 8,691 1962 1,540 366 - - 1,906 8,805 1963 1,515 379 - - 1,894 8,976 1964 1,523 408 - - 1,931 8,341 1965 1,582 397 - - 1,979 8,208 1966 1,528 445 - - 1,973 7,216 1967 1,439 440 - - 1,879 6,328 1968 1,490 444 - - 1,934 5,784 1969 1,591 495 - - 2,086 5,536 1970 2,151 650 - - 2,801 5,854 1971 2,278 588 - - 2,866 5,147 1972 1,269 317 1 - 1,587 3,121 1973 1,112 238 - 1 1,351 2,693 1974 1,412 246 - 2 1,660 3,062 1975 1,995 228 7 3 2,233 3,866 1976 2,349 249 9 - 2,607 4,515 1977 2,757 265 12 - 3,034 5,101 1/ Always associated with underground for count. NA Not available. Independent Mechanical Year shops and cleaning Grand yards plants total 1931 NA NA 5,652 1932 NA NA 5,473 1933 NA NA 5,629 1934 NA NA 6,290 1935 NA NA 6,332 1936 NA NA 6,572 1937 NA NA 6,537 1938 NA NA 6,531 1939 NA NA 7,274 1940 NA NA 7,192 1941 NA NA 7,401 1942 NA NA 6,940 1943 NA NA 6,490 1944 NA NA 6,435 1945 NA NA 6,358 1946 NA NA 6,942 1947 NA NA 9,105 1948 NA NA 9,419 1949 NA NA 8,739 1950 NA NA 8,817 1951 NA NA 9,679 1952 NA NA 8,994 1953 NA NA 8,610 1954 NA NA 7,934 1955 NA NA 8,676 1956 NA NA 9,246 1957 NA NA 9,117 1958 NA NA 9,459 1959 NA NA 9,085 1960 NA NA 9,347 1961 NA NA 8,691 1962 NA NA 8,805 1963 NA NA 8,976 1964 NA NA 8,341 1965 NA NA 8,208 1966 NA 458 7,674 1967 NA 434 6,762 1968 NA 439 6,223 1969 NA 439 5,975 1970 NA 442 6,296 1971 NA 491 5,638 1972 35 785 3,941 1973 65 669 3,427 1974 86 697 3,845 1975 94 772 4,732 1976 111 900 5,526 1977 137 1,072 6,310 1/ Always associated with underground for count. NA Not available. |