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Degasification study from an air shaft in the Beckley Coalbed

Comparisons between cross-measure boreholes and surface gob holes

Horizontal trajectories of rotary-drilled holes

Rotary drilling techniques used in the Beckley coalbed

Published Year

• 1980-1989 (4) *

Subject

• Boring (1)
• Boring--Pennsylvania--Ebensburg Region (1)
• Coalbed methane drainage--Pennsylvania--Ebensburg Region--Testing (1)
• Coalbed methane drainage--West Virginia (1)
• Coalbed methane drainage--West Virginia--Rotary drilling (1)
• Longwall mining--Pennsylvania--Ebensburg Region (1)
• Methane--United States (1)
• Mine ventilation (1)

Author

• Goodman, Tobias W. (4) *
• Cervik, Joseph. (3)
• Aul, George N. (1)

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