Modify Selection
- Hazard prevention and control:
- Fire and explosion prevention
- or
- Permissible explosives
- or
- Explosion suppression
- or
- Rock dust barriers
- or
- Ignition source elimination
- or
- Explosion proof design
- or
- Intrinsically safe design
- or
- Degasification
- or
- Gob gas vent holes
- or
- Horizontal boreholes
- or
- Cross measure boreholes
- or
- Bleeder systems
Home Links
Results 121 - 128 of 128
-
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.
-
1/1/1973 - Reports of InvestigationsThe Bureau of Mines is in the process of degasifying a virgin area in northern West Virginia from the base of an 839-foot-deep vertical borehole.
-
1/1/1972 - Reports of InvestigationsThe use of a partially slotted 6.5-Inch-inside-diameter vertical pipe to remove methane from a longwall gob area at a depth of 2,260 feet in the Pocahontas No. 3 Coalbed was investigated. The value of gas removed by such a pipe under free-flow condition...
-
1/1/1972 - Reports of InvestigationsA degasification experiment was conducted in a Pocahontas No. 3 Coalbed mine in Virginia. It involved (1) drilling holes in the coalbed in the outside headings of a set of five being developed in virgin area and (2) conducting a methane emission rate st...
-
3/1/1969 - Technical Progress ReportsAn experimental degasification program using a vertical borehole and vacuum pump to drain gas from the gob area of a longwall panel was successful at Bethlehem Mines Corporation, Cambria Division, No. 33 coal mine. Sixty-one million cubic feet of methan...
-
1/1/1962 - Reports of InvestigationsA joint investigation by the Bureau of Mines and the Christopher Coal Co. at the Humphrey No. 7 mine, operating in the Pittsburgh coalbed in northern West Virginia, was undertaken to gain more insight concerning the hazardous emission of methane gas in ...
-
2/1/1920 - NIOSH/USBM numbered publicationsThis bulletin deals with the general theory of protection from fire damp and also covers a detailed description of the apparatus that has been tested and approved.
-
1/1/1911 - NIOSH/USBM numbered publicationsThis bulletin traces the growth in the belief in the explosibility of coal dust, summarizes the experiments and mine investigations that have established this belief, and gives the present (1911) status of preventive measures.
Home Links
Content source: National Institute for Occupational Safety and Health, Mining Program