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- Hazard prevention and control:
- Bleeder systems
- Document types:
- Reports of Investigations
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Results 1 - 3 of 3
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1/1/1980 - Reports of InvestigationsThe use of vertical surface degasification boreholes with bleeder systems and the use of a timbered bleeder system to degasify gob areas were studied by the Bureau of Mines. This report describes three gob degasification studies conducted in the Pittsbu...
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1/1/1976 - Reports of InvestigationsThis report describes three coal mine ventilation studies by the Bureau of Mines in which sulfur hexafluoride (SF6) was used as a tracer gas.
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1/1/1973 - Reports of InvestigationsAir quantity-pressure and methane concentration surveys were conducted in accessible portions of an area being pillared in a Pittsburgh coalbed mine in West Virginia.
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Content source: National Institute for Occupational Safety and Health, Mining Program