UNITED STATES
DEPARTMENT OF LABOR
DEPARTMENT OF LABOR
Historical Data 1931 - 1977 All Coal Mines in the United States |
---|
TABLE 10. - Man-hours worked, by general work location, at all coal mines in the United States, 1931-77 Underground mines Total Year underground Underground Surface mining 1931 748,942,825 121,404,445 870,347,270 1932 586,132,753 100,475,824 686,608,577 1933 663,298,411 114,602,148 777,900,559 1934 716,843,966 122,331,583 839,175,549 1935 686,631,907 113,559,153 800,191,060 1936 775,208,054 128,135,195 903,343,249 1937 767,651,412 120,743,894 888,395,306 1938 578,325,001 95,883,400 674,208,401 1939 631,174,468 104,581,660 735,756,128 1940 698,853,920 112,722,489 811,576,409 1941 759,404,938 125,420,024 884,824,962 1942 831,601,025 146,940,808 978,541,833 1943 821,831,745 160,434,661 982,266,406 1944 826,700,609 180,371,287 1,007,071,896 1945 723,548,050 163,758,454 887,306,504 1946 656,739,055 149,916,061 806,655,116 1947 712,134,852 156,591,912 868,726,764 1948 663,834,124 149,760,155 813,594,279 1949 470,728,130 108,192,444 578,920,574 1950 519,090,175 119,720,506 638,810,681 1951 511,978,524 118,238,100 630,216,624 1952 431,309,203 101,052,670 532,361,873 1953 369,242,524 88,859,506 458,102,030 1954 270,848,931 70,109,257 340,958,188 1955 294,013,251 73,949,395 367,962,646 1956 299,085,138 76,130,615 375,215,753 1957 280,614,185 66,246,064 346,860,249 1958 213,175,261 52,609,078 265,784,339 1959 192,630,346 49,399,560 242,029,906 1960 181,715,004 46,557,852 228,272,856 1961 163,106,195 42,508,874 205,615,069 1962 157,333,200 41,102,251 198,435,451 1963 159,240,677 41,181,521 200,422,198 1964 161,043,446 39,415,369 200,458,815 1965 159,465,278 38,221,602 197,686,880 1966 154,002,624 25,708,895 179,711,519 1967 153,436,875 23,496,419 176,933,294 1968 148,593,131 21,052,283 169,645,414 1969 151,985,482 19,402,828 171,388,310 1970 164,576,129 19,460,060 184,036,189 1971 153,801,537 19,192,511 172,994,048 1972 170,495,460 17,056,901 187,552,361 1973 171,782,448 16,849,790 188,632,238 1974 173,409,396 17,973,527 191,382,923 1975 210,474,994 23,498,699 233,973,693 1976 217,941,158 23,933,537 241,874,695 1977 206,289,834 24,245,599 230,535,433 NA Not available. Total Year Strip Auger Culm Dredges surface Total banks mining mining 1931 12,937,803 NA NA NA 12,937,803 883,285,073 1932 12,515,960 NA NA NA 12,515,960 699,124,537 1933 14,947,004 NA NA NA 14,947,004 792,847,563 1934 16,311,413 NA NA NA 16,311,413 855,486,962 1935 18,952,430 NA NA NA 18,952,430 819,143,490 1936 22,637,174 NA NA 324,430 22,961,604 926,304,853 1937 23,503,493 NA NA 536,068 24,039,561 912,434,867 1938 21,025,425 NA NA 365,941 21,391,366 695,599,767 1939 23,868,726 NA NA 414,564 24,283,290 760,039,418 1940 28,232,634 NA NA 607,720 28,840,354 840,416,763 1941 35,879,513 NA NA 831,447 36,710,960 921,535,922 1942 41,609,413 NA NA 927,114 42,536,527 1,021,078,360 1943 48,438,060 NA 2,876,119 960,431 52,274,610 1,034,541,016 1944 65,631,763 NA 4,689,976 1,080,742 71,402,481 1,078,474,377 1945 67,688,593 NA 2,733,078 862,992 71,284,663 958,591,167 1946 68,945,107 NA 3,131,884 896,087 72,973,078 879,628,194 1947 77,334,619 NA 2,475,347 1,002,968 80,812,934 949,539,698 1948 81,531,176 NA 2,222,329 882,937 84,636,442 898,230,721 1949 61,450,815 NA 1,363,162 741,197 63,555,174 642,475,748 1950 71,017,995 NA 1,213,308 347,573 72,578,876 711,389,557 1951 65,935,063 NA 779,532 316,174 67,030,769 697,247,393 1952 60,408,049 NA 607,513 320,875 61,336,437 593,698,310 1953 54,405,852 NA 836,046 249,610 55,491,508 513,593,538 1954 46,263,087 NA 539,309 189,631 46,992,027 387,950,215 1955 49,262,500 1,502,084 437,277 214,108 51,415,969 419,378,615 1956 54,221,469 2,685,664 1,253,678 285,279 58,446,090 433,661,843 1957 52,050,907 2,358,783 1,204,586 235,568 55,849,844 402,710,093 1958 48,197,748 2,044,676 801,573 251,890 51,295,887 317,080,226 1959 46,556,136 1,933,575 680,824 252,311 49,422,846 291,452,752 1960 46,011,766 2,164,178 651,652 217,417 49,045,013 277,317,869 1961 43,038,045 1,879,406 568,152 247,606 45,733,209 251,348,278 1962 43,705,401 2,318,852 494,578 230,906 46,749,737 245,185,188 1963 45,318,532 2,798,202 527,159 208,776 48,852,669 249,274,867 1964 45,099,919 2,460,342 552,552 216,377 48,329,190 248,788,005 1965 45,105,063 2,379,825 485,904 192,575 48,163,367 245,850,247 1966 41,717,308 2,879,369 497,564 170,421 45,264,662 224,976,181 1967 42,311,617 2,735,248 615,846 147,314 45,810,025 222,743,319 1968 42,250,581 3,003,954 621,598 143,653 46,019,786 215,665,200 1969 44,282,952 3,050,098 591,488 143,323 48,067,861 219,456,171 1970 52,426,239 3,690,955 680,998 147,409 56,945,601 240,981,790 1971 58,940,951 3,776,796 616,034 84,449 63,418,230 236,412,278 1972 52,533,095 1,945,157 309,696 45,774 54,833,722 242,386,083 1973 57,683,377 1,732,973 310,376 56,825 59,783,551 248,415,789 1974 73,008,212 1,884,108 284,440 9,513 75,186,273 266,569,196 1975 96,634,243 1,453,643 424,772 45,921 98,558,579 332,532,272 1976 103,324,421 1,147,389 508,686 12,085 104,992,581 346,867,276 1977 118,762,983 1,122,651 413,230 16,179 120,315,043 350,850,476 NA Not available. Independent Mechanical Year shops and cleaning Grand yards plants total 1931 NA NA 883,285,073 1932 NA NA 699,124,537 1933 NA NA 792,847,563 1934 NA NA 855,486,962 1935 NA NA 819,143,490 1936 NA NA 926,304,853 1937 NA NA 912,434,867 1938 NA NA 695,599,767 1939 NA NA 760,039,418 1940 NA NA 840,416,763 1941 NA NA 921,535,922 1942 NA NA 1,021,078,360 1943 NA NA 1,034,541,016 1944 NA NA 1,078,474,377 1945 NA NA 958,591,167 1946 NA NA 879,628,194 1947 NA NA 949,539,698 1948 NA NA 898,230,721 1949 NA NA 642,475,748 1950 NA NA 711,389,557 1951 NA NA 697,247,393 1952 NA NA 593,698,310 1953 NA NA 513,593,538 1954 NA NA 387,950,215 1955 NA NA 419,378,615 1956 NA NA 433,661,843 1957 NA 5,497,087 408,207,180 1958 NA 5,148,589 322,228,815 1959 NA 4,578,486 296,031,238 1960 NA 4,209,958 281,527,827 1961 NA 3,947,324 255,295,602 1962 NA 3,761,187 248,946,375 1963 NA 3,909,641 253,184,508 1964 NA 3,616,545 252,404,550 1965 NA 3,138,132 248,988,379 1966 NA 18,782,824 243,759,005 1967 NA 19,031,115 241,774,434 1968 NA 18,751,720 234,416,920 1969 NA 18,027,767 237,483,938 1970 NA 19,187,416 260,169,206 1971 NA 17,722,746 254,135,024 1972 3,403,518 21,760,224 267,549,825 1973 5,411,116 23,794,623 277,621,528 1974 5,550,881 24,655,350 296,775,427 1975 6,533,342 29,130,973 368,196,587 1976 6,865,878 29,424,686 383,157,840 1977 6,785,964 32,983,526 390,619,966 NA Not available. |