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Fatalities in Small Underground Coal Mines (1983) / Chapter Skim
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APPENDIX A
Pages 17-23

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From page 17...
... Because of the way we selected mines, no interpretation can be given to the numbers but only to the relative proportions in the various age categories. Two things emerge from these data.
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From page 19...
... 15,512 (37) 41,950 NOTE: Numbers in parentheses are the percentage interval for the indicated mine size category.
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From page 21...
... 10,113 (18) 56,056 NOTE: Numbers in parentheses are the percentage of miners in each age interval for the indicated mine size category.
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From page 23...
... 20 u cc o E § u c 50 40 30 20 10 1972 1973 1974 YEAR 1975 1976 FIGURE A.I Changes in the age distribution of the workforce from 1972 to 1976.
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Key Terms

  • size category
  • indicated mine
  • mine age
  • age size
  • age distribution

  • age interval
  • age mine
  • age table
  • percentage interval
  • miners age

  • size age
  • earlier conclusion
  • larger mines
  • age categories
  • age category

  • various age
  • age distributions
  • size categories
  • coal dust
  • steadily rising

  • earlier study
  • steadily dropping
  • msha coal
  • selected mines
  • dust files

  • remains steady
  • oil embargo
  • relative proportions


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