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Technology News 489 - reducing the danger of explosions in sealed areas (GOBS) in mines.

Authors
NIOSH
Source
NIOSH 2001 Jun; :1-2
NIOSHTIC No.
20021623
Abstract
In the last 6 years, seven explosions of methane and/or coal dust occurred within worked-out, sealed areas (GOBS) of underground U.S. coal mines. These explosions, believed to have been started by lightning, destroyed many mine seals and caused much damage external to the sealed area. Three of these gob gas explosions occurred in one mine in Alabama over a 3-year period. Fortunately, the explosion forces and the toxic gases that vented from the sealed gob area did not cause fatalities or injuries, but they destroyed several large seals. If miners had been inspecting or working near these areas, the potential for serious injury and/or death would have been high. The United Mine Workers of America and the Mine Safety and Health Administration (MSHA) requested that the National Institute for Occupational Safety and Health (NIOSH) help identify the mechanisms for lightning penetration into the gob and recommend ways to reduce the probability of occurrence of future explosions from such lightning penetrations into sealed areas of underground coal mines.
Keywords
Mine-workers; Miners; Mining-industry; Methanes; Explosive-gases; Explosion-prevention; Coal-miners; Coal-mining; Coal-dust; Underground-miners; Underground-mining
Contact
Michael J. Sapko or Kenneth L. Cashdollar, NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Cochrans Mill Rd., Pittsburgh, PA 15236
CAS No.
74-82-8
Publication Date
20010601
Document Type
Technology News
Email Address
msapko@cdc.gov or kcashdollar@cdc.gov
Fiscal Year
2001
NTIS Accession No.
NTIS Price
Identifying No.
TN-489
NIOSH Division
PRL
Source Name
National Institute for Occupational Safety and Health
State
PA
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