Monitoring of Mine Air Blast Pollutants from Six Explosives Tested in an Underground Mine.
Abata-DL; Johnson-JH; Bunting-BC; Robb-J
NTIS: PB 295-676 :99 pages
Toxic gases produced by the detonation of six explosives were measured in an underground hard rock metal mine during actual mining operations. The six explosives included two semi-gelatin dynamites, three slurry explosives, and an ammonium-nitrate, fuel-oil-ammonia- dynamite combination. Explosives were detonated at the face of a drift and the toxic gases produced were trapped to the end of the drift by a bulkhead located a short distance away. Toxic gas concentrations were then measured with direct readout instruments and together with the containment volume, the toxic gas volumes per mass of explosives were calculated. Results showed that toxic gas production corrolated with the densities and energy densities of the explosives tested.
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