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Cover image for Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia

Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia

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Cover image for The direct method of determining methane content of coalbeds for ventilation design

The direct method of determining methane content of coalbeds for ventilation design

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Cover image for Geologic factors causing roof instability and methane emission problems

Geologic factors causing roof instability and methane emission problems

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Cover image for Cleat in bituminous coalbeds

Cleat in bituminous coalbeds

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Cover image for Geologic investigations of underground coal mining problems

Geologic investigations of underground coal mining problems

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Cover image for Measuring the methane content of bituminous coalbeds

Measuring the methane content of bituminous coalbeds

  • 1975
  • Format: Electronic
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Cover image for Use of surface joint and photolinear data for predicting subsurface coal cleat orientation

Use of surface joint and photolinear data for predicting subsurface coal cleat orientation

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Cover image for Selected geologic factors affecting mining of the Pittsburgh coalbed

Selected geologic factors affecting mining of the Pittsburgh coalbed

  • 1975
  • Format: Electronic
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Cover image for Determining cleat orientation of deeper coalbeds from overlying coals

Determining cleat orientation of deeper coalbeds from overlying coals

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Joyner - Fed Docs Stacks ASK AT REFERENCE DESK ✔ Available
Cover image for Use of surface joint and photolinear data for predicting subsurface coal cleat orientation

Use of surface joint and photolinear data for predicting subsurface coal cleat orientation

Location Call # Status
Joyner - Fed Docs Stacks ASK AT REFERENCE DESK ✔ Available