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- Hazard prevention and control:
- Permissible explosives
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4/1/1982 - Contract reports, Technical Progress ReportsThe Bureau of Mines has developed a prototype nonincendive explosive rock-breaker charge that can be fired unconfined in underground bituminous coal mines without the danger of igniting a flammable atmosphere that might be present.
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Content source: National Institute for Occupational Safety and Health, Mining Program