Firedamp-safe method for stud driving cartridges

Details Firedamp-safe method for stud driving cartridges Firedamp-safe method for stud driving cartridges

1982-05-10

1984-06-12

Miller, Edward A.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

102290, 102531, 149 11, 227 9, E21D 2000

Patent

active

044538600

ABSTRACT:
A firedamp-safe propellant charge comprising a pyrotechnical gas-yielding propellant, said propellant coated with a polymer and/or amides of C.sub.2 -C.sub.4 dicarboxylic acids and/or ammonium oxalate, which composition, upon ignition of the propellant, disintegrates into radicals, said coating being present on said popellant in an amount of 15 to 30 weight percent based upon the weight of said propellant charge.

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Meyer, "Explosives", pp. 209-213, Verlag Chemi., (1977), New York.

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