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Sorption investigations of methane on coal

Design and development of drill equipment

Degasification and production of natural gas from an air shaft in the Pittsburgh coalbed

Methane drainage study in the Sunnyside coalbed, Utah

Grouting horizontal drainage holes in coalbeds

Drainage of methane from the overlying Pocahontas no. 4 coalbed from workings in the Pocahontas no. 3 coalbed

Review of horizontal drilling technology for methane drainage from U.S. coalbeds


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