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  1. 1
    Keystone coal industry manual.
    Published 2009
    Serial
  2. 2
    Proceedings of the ... Annual Institute /
    Published 1980
    Serial
  3. 3
    Coal facts.
    Published 1975
    Serial
  4. 4
    Keystone coal buyers manual.
    Published 1935
    Serial
  5. 5
    Facts about coal.
    Published 1982
    Serial
  6. 6
    Environmental development plan.
    Government Document Serial
  7. 7
    Annual report and achievements - Mining Enforcement and Safety Administration.
    Government Document Serial
  8. 8
    Bituminous coal and lignite production and mine operations.
    Government Document Serial
  9. 9
    Coal mining research and development in fiscal year ...
    Published 1978
    Government Document Microform Serial
  10. 10
    Coal data, a reference /
    Published 1995
    Government Document Serial
  11. 11
    Coal production /
    Government Document Serial
  12. 12
    Index /
    Published 1980
    Government Document Serial
  13. 13
    Federal coal management report : annual report of the Secretary of the Interior under section 8 of the Federal Coal Leasing Amendments Act of 1976 (P.L. 94 377).
    Published 1979
    Government Document Serial
  14. 14
    Injury experience in coal mining /
    Government Document Serial
  15. 15
    Coal production /
    Published 1993
    Government Document Microform Serial
  16. 16
    Federal coal management report : annual report of the Secretary of the Interior under section 8 of the Federal Coal Leasing Amendments Act of 1976 (P.L. 94 377).
    Government Document Microform Serial
  17. 17
    Plan of work for cooperative hydrology investigations.
    Government Document Microform Serial
  18. 18
    Directory of organizations interested in innovative coal utilization technologies.
    Published 1990
    Government Document Microform Serial
  19. 19
    Coal industry annual.
    Published 1993
    Get full text
    Government Document Microform Serial
  20. 20
    Coal industry annual.
    Published 2000
    Get full text
    Government Document Serial
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