4.8.2. The employer shall ensure that when firing is done electrically, no one shall return to the scene within 10 minutes, or longer, depending on ventilation, of the time at which the blasting current was applied.
R.R.Q., 1981, c. S-2.1, r. 6, s. 4.8.2; O.C. 1959-86, s. 68.