1
Safety valves.
Duty to
fence off dangerous places. Duty to post notices.
Inspection
of electrical installa- tions.
(2) Receivers, inter-coolers and their connexions to air cylinders shall be kept clean and free from carbonized oil or other material liable to ignition and shall be opened for inspection at least once every three months in which they may be in use and a written record made of their condition.
13. (0) All cylinders and receivers for air and gas of a higher pressure than the atmosphere shall be fitted with satis- factory apparatus for showing the pressure of air or gas within such cylinder or receiver while in use and also with relief or safety valve or other apparatus capable of preventing any undue accumu- lation of pressure above the safe working limit of the container.
(2) The manager shall test receivers at intervals not exceed- ing three years by hydraulic pressure to the extent of one and one-third times the working pressure and a written record of such test signed by the person conducting the same shall be made in the machinery book.
14. (1) Dangerous places such as clevated platforms, pits and trap-holes, shall be fenced off so as to safeguard effectively persons in the vicinity.
(2) Unauthorized entrances into any place where machinery or steam boilers are erected are prohibited; notice to this effect shall be posted up at all entrances.
PART II.
Electricity.
15. (1) In a mine, the Superintendent of Mines or any authorized mines officer may examine any electrical installation at any reasonable time.
(2) If any matter appears to be defective, the Superintendent of Mines shall report thereon to the manager who shall take steps to carry out the necessary repairs within twenty-four hours of receiving the report.
PART IV.
Explosives.
18. It shall be lawful for the Superintendent of Mines to Power of prescribe in writing-
Superin- Lendent writla
(#) the precautions to be taken in respect of the blasting of regard to
blasting. any stone, earth or other material in a mine; and
(b) the hours during which blasts may be fired off therein,
17. The manager may sell, and a contractor working in a Power to mine may buy from him, explosives solely for use in connexion sell and
buy with any contract in or about the mine so long as such explosives explosives. are not sold for profit and remain under the sole control of the inine management.
18. (1) When a mine is closed down notice shall be given Prohibition to the Chief Officer of the Fire Brigade of any explosives remain against storing ing thereon or therein, and such explosives shall be removed or explosives
in closed- disposed of in such manner as he may direct in writing.
down mine.
(a) No other explosives may be stored at or in any such closed-down mine or other works without the permission in writing of the Chief Officer of the Fire Brigade and in accordance with the provisions of the Dangerous Goods Ordinance.
(1 of 1873).
18. (1) Explosives in excess of the estimated requirements Prohibition for twenty-four hours shall not be stored underground in a mine against storing and such explosives shall only be stored in underground storage explosives
under. boxes, In no case shall detonators and capped fuses be stored in the same box with other explosives.
ground
in excess of estimated
(2) The following conditions shall apply to all underground require storage-
(a) storage boxes shall be kept at a safe distance from work- ing faces in dry and secluded places and at least six feet away from each other;
(b) the boxes shall be stoutly built of wood sufficiently waterproof, and shall be kept in good repair and securely locked. The shot-firer shall keep the keys and only unlock them for the purpose of placing or removing explosives;
ments