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3 results returnedEffect of a surface borehole on longwall gob degasification(Pocahontas No. 3 Coalbed)
Probability of encountering coalbed discontinuities during vertical and horizontal borehole drilling
Site-specific and regional geologic considerations for coalbed gas drainage
Published Year
Subject
- Boring (3) *
- Methane (3) *
- Coal mines and mining (1)
- Coal mines and mining--United States--Safety measures (1)
- Coal--Geology--United States (1)
- Mine ventilation (1)
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