158(1)An employer and a blaster shall each ensure that no drilling is done within a distance equal to one and one-half times the depth of the drill hole to any drill hole containing explosives and that notwithstanding the depth of the drill hole, a minimum distance of 6.5 m is maintained at all times.

158(2)Where, due to the nature of the ground being drilled, it is necessary to load a drill hole immediately after drilling is complete and subsequently to drill adjacent holes, an employer shall establish a code of practice detailing the procedure to be followed in such a situation to ensure employee safety.