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  1. 1
    Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania /

    Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania / by Bauer, Eric R.

    Published 1992
    Subjects: “…Ground control (Mining) Pennsylvania.…”
    Government Document Book
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  2. 2
    Character of drainage from mines in the Thick Freeport coal bed, Pennsylvania /

    Character of drainage from mines in the Thick Freeport coal bed, Pennsylvania / by Leitch, R. D.

    Published 1932
    Subjects: “…Acid mine drainage Pennsylvania.…”
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  3. 3
    Geologic factors influencing the gas content of coalbeds in southwestern Pennsylvania /

    Geologic factors influencing the gas content of coalbeds in southwestern Pennsylvania / by Ulery, J. P. (James P.)

    Published 1988
    Subjects: “…Coalbed methane Pennsylvania.…”
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  4. 4
    Subsidence due to undermining of sloping terrain : a case study /

    Subsidence due to undermining of sloping terrain : a case study / by Jeran, P. W.

    Published 1988
    Subjects: “…Mine subsidences Pennsylvania.…”
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  5. 5
    The acidity of Black Lick, Two Lick and Yellow Creeks, Pennsylvania during low water in 1930 /

    The acidity of Black Lick, Two Lick and Yellow Creeks, Pennsylvania during low water in 1930 / by Leitch, Richard Duddleston, 1894-1965

    Published 1931
    Subjects: “…Water Pollution Pennsylvania Indiana County.…”
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  6. 6
    The acidity of Bennett branch of Sinnemahoning Creek, Pa., during low water, 1930 /

    The acidity of Bennett branch of Sinnemahoning Creek, Pa., during low water, 1930 / by Leitch, R. D.

    Published 1931
    Subjects: “…Soil acidity Pennsylvania.…”
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  7. 7
    Carbonizing properties of Indiana County, Pa., coals /

    Carbonizing properties of Indiana County, Pa., coals / by Wolfson, D. E. (David E.)

    Published 1957
    Subjects: “…Coal Pennsylvania Indiana County Carbonization.…”
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  8. 8
    Deep-well pumps and shaft pumps in anthracite mines of Pennsylvania /

    Deep-well pumps and shaft pumps in anthracite mines of Pennsylvania / by Lesser, William H.

    Published 1950
    Subjects: “…Mine pumps Pennsylvania.…”
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  9. 9
    Carbonizing properties of Somerset County, Pa., coals /

    Carbonizing properties of Somerset County, Pa., coals / by Wolfson, D. E. (David E.)

    Published 1956
    Subjects: “…Coal Pennsylvania Somerset County Carbonization.…”
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  10. 10
    Centrifugal pump installations in anthracite mines of Pennsylvania /

    Centrifugal pump installations in anthracite mines of Pennsylvania / by Lesser, William H.

    Published 1950
    Subjects: “…Mine pumps Pennsylvania.…”
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  11. 11
    Predicted oil recovery by waterflood and gas drive, Bradford Third and Sartwell Sands, Sartwell Oilfield, McKean County, Pa. /

    Predicted oil recovery by waterflood and gas drive, Bradford Third and Sartwell Sands, Sartwell Oilfield, McKean County, Pa. / by Duda, John R., Overbey, W. K. (William K.), Johnson, Harry R.

    Published 1967
    Subjects: “…Secondary recovery of oil Pennsylvania.…”
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  12. 12
    Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania

    Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania by Bauer, Eric R.

    Published 1992
    Subjects: “…Ground control (Mining) Pennsylvania Ebensburg Region.…”
    Government Document Microfilm Book
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  13. 13
    Investigation of wood chromite mine area Lancaster County, Pa. /

    Investigation of wood chromite mine area Lancaster County, Pa. / by McIntosh, Frank K.

    Published 1948
    Subjects: “…Geomagnetism Pennsylvania Lancaster County.…”
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  14. 14
    Investigation of the Benjamin Franklin graphite mine (government owned) and the Just graphite mine, Chester County, Pa. /

    Investigation of the Benjamin Franklin graphite mine (government owned) and the Just graphite mine, Chester County, Pa. / by Sanford, Robert S.

    Published 1949
    Subjects: “…Graphite Pennsylvania Chester County.…”
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  15. 15
    Investigation of Pickering Creek lead-zinc deposits, Chester County, Pa. /

    Investigation of Pickering Creek lead-zinc deposits, Chester County, Pa. / by Reed, Donald F.

    Published 1949
    Subjects: “…Lead ores Pennsylvania Chester County.…”
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  16. 16
    Investigation of the Albright farm lead-zinc deposit, Blair County, Pa. /

    Investigation of the Albright farm lead-zinc deposit, Blair County, Pa. / by Reed, Donald F.

    Published 1949
    Subjects: “…Lead ores Pennsylvania Blair County.…”
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  17. 17
    Investigation of the Almedia lead-zinc deposit, Columbia County, Pa. /

    Investigation of the Almedia lead-zinc deposit, Columbia County, Pa. / by Earl, Kenneth M.

    Published 1950
    Subjects: “…Lead ores Pennsylvania Columbia County.…”
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  18. 18
    Investigation of Boiling Springs manganese-iron deposits, Cumberland County, Pa. /

    Investigation of Boiling Springs manganese-iron deposits, Cumberland County, Pa. / by Burton, S. E.

    Published 1949
    Subjects: “…Manganese ores Pennsylvania Cumberland County.…”
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  19. 19
    Effect of changes in moisture and temperature on mine roof.

    Effect of changes in moisture and temperature on mine roof. by Hartmann, Irving, 1905-

    Published 1941
    Subjects: “…Mine roof control Pennsylvania Pittsburgh.…”
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  20. 20
    Carbonizing properties of Armstrong County, Pa., coals /

    Carbonizing properties of Armstrong County, Pa., coals /

    Published 1954
    Subjects: “…Coal Pennsylvania Armstrong County Carbonization.…”
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