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5 results returnedComparison of rotary and in-hole motor techniques for drilling horizontal boreholes in coal
Shield-loading studies at an eastern Appalachian minesite
Accurate directional borehole drilling :a case study at the Navajo Dam, New Mexico
In-mine test of the Bureau of Mines preproduction wireless survey system
Determining the source of longwall gob gas :Lower Kittanning Coalbed, Cambria County, PA
Published Year
Subject
- Boring (2)
- Mine ventilation (2)
- Coal mine waste--Pennsylvania--Cambria County (1)
- Coalbed methane drainage--Directional drilling (1)
- Coalbed methane drainage--Pennsylvania (1)
- Directional drilling--New Mexico--Navajo Dam (1)
- Firedamp--Pennsylvania--Cambria County (1)
- Longwall mining--Appalachian Region (1)
- Longwall mining--Pennsylvania--Cambria County (1)
- Mine roof control (1)
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