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Historical Data 1931 - 1977
Pennsylvania Anthracite Mines
in the United States


TABLE 10A. - Man-hours, by general work location, at Pennsylvania anthracite
             mines in the United States, 1931-77 

        Underground mines             Total
Year                            underground
       Underground     Surface       mining

1931  159,685,407  44,891,989  204,577,396 
1932  119,217,854  34,062,944  153,280,798 
1933  115,472,728  33,590,136  149,062,864 
1934  134,350,568  37,057,015  171,407,583 
1935  114,754,502  31,833,067  146,587,569 
1936  115,556,143  33,102,050  148,658,193 
1937  101,567,961  27,774,391  129,342,352 
1938   86,548,574  24,221,448  110,770,022 
1939   91,365,686  26,244,223  117,609,909 
1940   90,512,425  25,222,421  115,734,846 
1941   95,789,822  27,318,651  123,108,473 
1942   99,439,274  30,572,023  130,011,297 
1943  105,258,931  34,005,493  139,264,424 
1944  107,243,042  40,053,588  147,296,630 
1945   92,252,695  36,186,679  128,439,374 
1946   99,497,367  37,336,862  136,834,229 
1947   97,424,631  34,730,557  132,155,188 
1948  100,565,199  35,350,752  135,915,951 
1949   72,432,875  26,128,886   98,561,761 
1950   76,750,937  27,001,449  103,752,386 
1951   68,666,920  26,318,752   94,985,672 
1952   60,939,199  23,475,423   84,414,622 
1953   41,445,701  18,589,392   60,035,093 
1954   28,873,117  14,558,885   43,432,002 
1955   26,952,904  12,202,202   39,155,106 
1956   27,673,009  13,587,081   41,260,090 
1957   23,915,335   6,763,428   30,678,763 
1958   17,735,303   5,458,992   23,194,295 
1959   13,959,293   4,566,555   18,525,848 
1960   10,855,931   3,749,577   14,605,508 
1961    9,267,435   3,700,796   12,968,231 
1962    8,461,822   3,290,472   11,752,294 
1963    8,425,591   3,154,260   11,579,851 
1964    8,291,730   2,914,235   11,205,965 
1965    6,443,993   2,489,882    8,933,875 
1966    4,550,379   2,164,476    6,714,855 
1967    3,555,616   1,861,096    5,416,712 
1968    2,666,212   1,423,747    4,089,959 
1969    2,304,477     961,956    3,266,433 
1970    2,169,220     784,026    2,953,246 
1971    1,564,502     514,770    2,079,272 
1972      772,412     216,940      989,352 
1973      752,549     186,864      939,413 
1974      533,315     113,851      647,166 
1975      666,075     112,773      778,848 
1976      689,461     118,070      807,531 
1977      563,294     102,180      665,474 

NA Not available. 
                                                      Total
Year         Strip        Culm      Dredges          surface          Total
                         banks                        mining         mining

1931    3,837,173          NA           NA        3,837,173    208,414,569 
1932    3,663,201          NA           NA        3,663,201    156,943,999 
1933    5,660,529          NA           NA        5,660,529    154,723,393 
1934    6,964,498          NA           NA        6,964,498    178,372,081 
1935    7,508,812          NA           NA        7,508,812    154,096,381 
1936    7,503,301          NA      324,430        7,827,731    156,485,924 
1937    5,975,531          NA      536,068        6,511,599    135,853,951 
1938    4,716,324          NA      365,941        5,082,265    115,852,287 
1939    5,186,770          NA      414,564        5,601,334    123,211,243 
1940    6,104,749          NA      607,720        6,712,469    122,447,315 
1941    6,167,485          NA      831,447        6,998,932    130,107,405 
1942    6,621,583          NA      927,114        7,548,697    137,559,994 
1943    7,731,034   2,876,119      960,431       11,567,584    150,832,008 
1944   10,481,739   4,689,976    1,080,742       16,252,457    163,549,087 
1945    9,239,525   2,733,078      862,992       12,835,595    141,274,969 
1946   10,771,050   3,131,884      896,087       14,799,021    151,633,250 
1947   10,889,857   2,475,347    1,002,968       14,368,172    146,523,360 
1948   11,523,771   2,222,329      882,937       14,629,037    150,544,988 
1949    8,644,106   1,363,162      741,197       10,748,465    109,310,226 
1950   11,240,415   1,213,308      347,573       12,801,296    116,553,682 
1951   10,759,622     779,532      316,174       11,855,328    106,841,000 
1952   10,441,235     607,513      320,875       11,369,623     95,784,245 
1953    8,153,950     836,046      249,610        9,239,606     69,274,699 
1954    6,062,054     539,309      189,631        6,790,994     50,222,996 
1955    6,188,271     437,277      214,108        6,839,656     45,994,762 
1956    7,420,579   1,253,678      285,279        8,959,536     50,219,626 
1957    6,695,265   1,204,586      235,568        8,135,419     38,814,182 
1958    6,074,662     801,573      251,890        7,128,125     30,322,420 
1959    5,333,838     680,824      252,311        6,266,973     24,792,821 
1960    4,767,847     651,652      217,417        5,636,916     20,242,424 
1961    4,692,972     568,152      247,606        5,508,730     18,476,961 
1962    4,440,797     494,578      230,906        5,166,281     16,918,575 
1963    4,822,806     527,159      208,776        5,558,741     17,138,592 
1964    4,776,258     552,552      216,377        5,545,187     16,751,152 
1965    3,624,873     485,904      192,575        4,303,352     13,237,227 
1966    3,333,266     497,564      170,421        4,001,251     10,716,106 
1967    3,179,230     615,846      147,314        3,942,390      9,359,102 
1968    3,261,788     621,598      143,653        4,027,039      8,116,998 
1969    3,319,319     591,488      143,323        4,054,130      7,320,563 
1970    3,610,152     680,998      147,409        4,438,559      7,391,805 
1971    3,616,498     616,034       84,449        4,316,981      6,396,253 
1972    2,640,181     301,932       45,774        2,987,887      3,977,239 
1973    2,287,116     310,376       47,669        2,645,161      3,584,574 
1974    2,050,650     268,567          494        2,319,711      2,966,877 
1975    2,023,147     250,580        4,805        2,278,532      3,057,380 
1976    2,121,292     303,637       12,085        2,437,014      3,244,545 
1977    2,195,043     215,325       16,179        2,426,547      3,092,021 

NA Not available.       

          Independent  Mechanical
Year     shops and    cleaning        Grand
             yards      plants        total

1931           NA          NA  208,414,569 
1932           NA          NA  156,943,999 
1933           NA          NA  154,723,393 
1934           NA          NA  178,372,081 
1935           NA          NA  154,096,381 
1936           NA          NA  156,485,924 
1937           NA          NA  135,853,951 
1938           NA          NA  115,852,287 
1939           NA          NA  123,211,243 
1940           NA          NA  122,447,315 
1941           NA          NA  130,107,405 
1942           NA          NA  137,559,994 
1943           NA          NA  150,832,008 
1944           NA          NA  163,549,087 
1945           NA          NA  141,274,969 
1946           NA          NA  151,633,250 
1947           NA          NA  146,523,360 
1948           NA          NA  150,544,988 
1949           NA          NA  109,310,226 
1950           NA          NA  116,553,682 
1951           NA          NA  106,841,000 
1952           NA          NA   95,784,245 
1953           NA          NA   69,274,699 
1954           NA          NA   50,222,996 
1955           NA          NA   45,994,762 
1956           NA          NA   50,219,626 
1957           NA   5,497,087   44,311,269 
1958           NA   5,148,589   35,471,009 
1959           NA   4,578,486   29,371,307 
1960           NA   4,209,958   24,452,382 
1961           NA   3,947,324   22,424,285 
1962           NA   3,761,187   20,679,762 
1963           NA   3,909,641   21,048,233 
1964           NA   3,616,545   20,367,697 
1965           NA   3,138,132   16,375,359 
1966           NA   2,955,760   13,671,866 
1967           NA   3,000,191   12,359,293 
1968           NA   2,894,241   11,011,239 
1969           NA   2,751,967   10,072,530 
1970           NA   2,832,005   10,223,810 
1971           NA   2,918,940    9,315,193 
1972       77,926   2,156,452    6,211,617 
1973      292,258   2,169,208    6,046,040 
1974      200,993   1,935,520    5,103,390 
1975      157,793   1,731,421    4,946,594 
1976      154,081   1,774,090    5,172,716 
1977      143,652   1,950,788    5,186,461 

NA Not available.