OHS Code

Published Date: July 01, 2009
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Part 36 Mining

Section 670 Stemming

(1) An underground mine blaster must ensure that

(a) all blast holes are stemmed,

(b) stemming is to the collar in shot holes, and

(c) a non-flammable substance or material is used for stemming.

(2) If water stemming is used, the underground mine blaster must ensure that

(a) a layer of clay at least 100 millimetres thick is tamped into the hole between the charge and the stemming, or

(b) the water is in at least 2 separate packings.