S-2.1, r. 4 - Safety Code for the construction industry

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4.7.5.1. During blasting, projections must stay within the blasting area. To that end, the employer must take appropriate measures to reduce and control projections, in particular by using blasting mats.
When blasting mats are used, they must be deposited, not slid, onto blastholes loaded with explosives.
O.C. 57-2015, s. 50.