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

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8.2.10. During rock bolting, the required bolts shall be:
(a)  put into place as soon as a zone has been exposed; and
(b)  equipped with a stress distribution plate on the rock.
R.R.Q., 1981, c. S-2.1, r. 6, s. 8.2.10.