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  1. 1
    Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia /
    by Bench, B. M.
    Published 1977
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    Government Document Book
  2. 2
    Geologic factors influencing the gas content of coalbeds in southwestern Pennsylvania /
    by Ulery, J. P. (James P.)
    Published 1988
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    Government Document Book
  3. 3
    Methane control on longwalls with cross-measure boreholes (Lower Kittanning coalbed) /
    by Garcia, F. (Fred)
    Published 1985
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    Government Document Book
  4. 4
    Methane emission rate studies in a central Pennsylvania mine /
    by Krickovic, Stephen
    Published 1971
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    Government Document Book
  5. 5
    Selected geologic factors affecting mining of the Pittsburgh coalbed /
    Published 1975
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    Government Document Book
  6. 6
    Reducing hazards in underground coal mines through the recognition and delineation of coalbed discontinuities caused by ancient channel processes /
    by Kertis, Carla A.
    Published 1985
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    Government Document Book
  7. 7
    Distribution of coal shipments.
    Published 1931
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    Government Document eBook
  8. 8
    Method and cost of mining Thick Freeport coal in western Pennsylvania mine.
    Published 1929
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    Government Document eBook
  9. 9
    Method and cost of mining Thick Freeport coal in 2nd western Pennsylvania mine.
    Published 1929
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    Government Document eBook
  10. 10
    Safety at mines of Ford Collieries Company, Curtisville, Pa.
    Published 1930
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    Government Document eBook
  11. 11
    Safety at mines of Ford Collieries Company, Curtisville, Pa.
    Published 1930
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    Government Document eBook
  12. 12
    Wire saw in slate quarrying; second supplementary report.
    Published 1929
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    Government Document eBook
  13. 13
    Mine timber in Pennsylvania coal mines.
    Published 1923
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    Government Document eBook
  14. 14
    Carbon monoxide fatalities from natural-gas heaters investigated by Bureau of Mines in Pittsburgh district during past year.
    Published 1924
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    Government Document eBook
  15. 15
    Explosives used in Oct. 1924.
    Published 1924
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    Government Document eBook
  16. 16
    Some information on extinguishing anthracite refuse-bank fire near Mahonoy City, Pa.
    Published 1940
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    Government Document eBook
  17. 17
    Carbonizing properties and petrographic composition of upper Freeport coal from Morgantown district, Monongalia County, W. Va., and of lower Freeport coal from eastern Indiana County near Cambria County, Pa.
    Published 1941
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    Government Document eBook
  18. 18
    Carbonizing Propertites and Petrographic Composition of Bakerstown-Bed Coal from No. 23 Mine, Coketon, Tucker County, W. VA., and the Effect of Blending this Coal with the Pittsburgh-Bed (Warden Mine) Coal.
    Published 1942
    Electronic resource (PDF)
    Government Document eBook
  19. 19
    Analyses of Pennsylvania Bituminous Coal, Supplement to Technical Paper 590.
    Published 1942
    Electronic resource (PDF)
    Government Document eBook
  20. 20
    Compressibility and Bearing Strength of Coal in Place : Tests of Lateral Compression of Pittsburgh Coal Bed.
    Published 1933
    Electronic resource (PDF)
    Government Document eBook
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