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Puzzled about primers for large-diameter AN-FO charges? Here's some help to end the mystery.
Coal Age 1976 Aug; 81(8):102-107
The correct priming method for large-diameter AN-FO charges has long been a subject of controversy. Axial priming, multiple point priming with small charges, thermal priming, and shock priming are techniques which have been advocated. The correct location, size, shape, and formulation of primer have been debated. Various researchers, including the Bureau of Mines, have performed studies which clarify the situation. This paper brings together conclusions reached by different studies and makes specific recommendations to the operator.
Mining-industry; Explosive-devices; Explosives; Blasting-agents
OP; Journal Article
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Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division