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2 results returnedReview of horizontal drilling technology for methane drainage from U.S. coalbeds
Comparison of rotary and in-hole motor techniques for drilling horizontal boreholes in coal
Published Year
Subject
- Boring (2) *
- Coal mines and mining--United States--Safety measures (1)
- Coalbed methane drainage--Pennsylvania (1)
- Coalbed methane drainage--United States (1)
- Mine ventilation (1)
Author
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