S-2.1, r. 14 - Regulation respecting occupational health and safety in mines

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438. When the working face has been examined in accordance with section 437, all remnants of drill holes shall be marked in one of the following ways:
(1)  by a circle in paint or crayon of a colour contrasting with the rock;
(2)  by inserting a stick into the holes.
O.C. 213-93, s. 438.