OHS Code

Published Date: July 01, 2009
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Part 36 Mining

Section 672 Misfires

(1) A mine manager must ensure that a misfire is handled under the direct supervision of an underground mine blaster.

(2) If a misfire occurs, the underground mine blaster must ensure that

(a) no worker returns to the working face until the expiration of a waiting period of at least 10 minutes, and

(b) the blasting cable is disconnected from the blasting apparatus and the cable ends short-circuited before a worker examines the misfire to determine the cause of the misfire.

(3) An underground mine blaster must ensure that a worker removes an explosive from a loaded blast hole only by using a jet of water.

(4) A worker must not pull a detonator lead wire from a charged blast hole.