Regulation 201(1) A manager of a mine shall(a) prepare a schedule of specific times at which primary blasting in any part of the mine shall take place; and(b) ensure that blasting in one part of the mine does not expose any person to danger in another part.(2) The manager of the mine shall ensure that the schedule is not altered or amended in less than one hour or more than twenty-four hours before the commencement of the first shift to which the alteration or amendment applies.(3) The manager of the mine may temporarily alter or amend the schedule in cases of emergency in order to prevent danger to life or property in the mine and the manager shall ensure that every official and person in charge or concerned is notified of the temporary alteration.(4) The schedule required by sub-regulations (1) to (3) shall be(a) prepared in a manner that ensures that a person in an area of the mine affected by the blast is not avoidably exposed to fumes, dust or flying debris originating from the blast; and(b) posted in a conspicuous manner on the surface where it can conveniently be seen before the commencement of the shift by any official or person in charge of the mine.(5) The blasting of misfired holes or hitches, or any blasting for the purpose of making a place safe in a mine, may be carried out at any time, but only with the express permission of the Shift Boss, or some other more senior official, if the Shift Boss or that other senior official is satisfied that no person will be exposed to any danger from the blast.(6) A person shall not enter or cause or permit a subordinate to enter a place in the mine in which blasting has taken place and in which the air may have become dusty or contaminated with fumes from the blasting, until a competent person is satisfied that the polluted air has been removed and the environment is safe for breathing.(7) In case of an emergency a person may enter the polluted place in the mine if authorised to do so by the Shift Boss in charge of the section, and if equipped with a reliable mask or breathing apparatus.(8) If in the opinion of the inspector, any re-entry period is insufficient for the removal of dust and fumes which might occur in the mine, the inspector may in writing require the substitution for the re-entry period of a longer period.