### Mines (Safety) Regulations 《礦場(安全)規例》

86. Maximum cyanide content of sand filling
When sand is used for filling worked-out underground areas, the moisture content in such sand and the liquid draining therefrom shall not have a higher cyanide content than 0.005% expressed as cyanide of potassium.
(E.R. 1 of 2021)

87. Power as to disposal of slime
(1) A mines officer may serve on any manager a written order as to the safe disposal of slime or other waste.
(2) The provisions of regulation 103 shall apply to an order made under paragraph (1).

88. Duties of responsible persons
(1) Unless exempted by the Superintendent of Mines—
(a) the person responsible for the work under a prospecting licence, shall dwell in the area to which the licence relates or within 8 kilometres thereof; and
(b) the person responsible for the work under a mining licence or a mining lease shall dwell in the area to which the licence or lease relates or within 8 kilometres thereof. (L.N. 87 of 1986)
(2) The manager shall be responsible for—
(a) all work done under a prospecting licence, a mining licence or a mining lease; and
(b) the enforcement of all regulations governing the use, storage and supply of explosives unless he has, in writing, appointed some competent person to be in charge of a specified area. A copy of the written appointment shall be sent to the Superintendent of Mines.
(3) The manager may delegate his responsibility in respect of welfare, health and housing conditions to a person approved by the Superintendent of Mines.
(4) The holder of a prospecting or mining licence or the lessee of a mining lease or the agent of any of them who is not managing his own prospecting or mining operations shall without delay notify the Superintendent of Mines in writing of the name of the person appointed so to do.
(5) Every manager shall have in his possession a copy of the Mining Ordinance (Cap. 285) and of these regulations and of any amendments to either of them.

89. Responsibility for working
The working of a mine shall be carried on under the control and responsibility of the manager.

90. General responsibility
Where under these regulations responsibility is not specifically fixed on any particular person it shall attach to the manager.

91. Manager’s responsibility in relation to dangerous work
The manager shall ensure that incompetent or inexperienced workmen are not employed on dangerous work.

92. Responsibility of manager for safety and discipline
The manager shall be responsible for the safety and proper discipline of the men employed above and below ground. He shall appoint such persons as may be necessary to assist him to carry out any of the provisions of these regulations.

93. Duty of manager to comply with orders
The manager shall be responsible for ensuring compliance with any order made under section 44(b) of the Ordinance.

### Mines (Safety) Regulations 《礦場(安全)規例》

94. Sanitation
The manager of a mine shall be responsible for sanitary conditions underground.

95. Duty to enforce provisions regarding storage and supplies of explosives, etc.
Every manager shall carry out and enforce all the provisions of these regulations and of any other enactment governing the use, storage and supply of explosives. The manager shall also appoint, in writing, to be officials of a mine such persons as are necessary to assist him to carry out the provisions and in order to ensure the thorough supervision of all operations in or about a mine.

96. Duty to ensure adequate supply of materials and appliances
(1) Every manager shall ensure that, at all times, a sufficient supply of timber, proper materials and appliances for the purpose of carrying out the provisions of these regulations and ensuring the safety of a mine and the persons employed therein is always provided.
(2) Every manager shall specify the manner in which supports are to be set and advanced and the maximum intervals to be observed on roadways between the supports, and at the face—
(a) between each row of props;
(b) between adjacent props in the same row;
(c) between the front row of props and the face;
(d) between any holing props or sprags;
(e) between chocks.

### Mines (Safety) Regulations 《礦場(安全)規例》

98. Duty to deposit copies with the Mines Division, Civil Engineering and Development Department
Two copies of the underground plan as required by regulation 97(1) duly certified as correct by the manager of a mine shall be deposited at the office of the Mines Division, Civil Engineering and Development Department and shall be brought up to date at the end of each year.
(L.N. 214 of 1977; L.N. 42 of 1991; L.N. 364 of 1991; L.N. 104 of 2004)

99. Power of Superintendent to require transverse sections of shafts
The Superintendent of Mines may require that transverse sections of the principal shafts in use in a mine shall be made.

100. Power of Superintendent in respect of plans
(1) If in respect of any mine the plans required by regulation 97 are not made, or are not kept as required, the Superintendent of Mines may have such plans or necessary additions thereto made at the expense of the manager.
(2) If copies of the underground plan are not deposited as required by regulation 98 or if copies sent are not made according to the regulations, the Superintendent of Mines may have copies or any necessary additions thereto made at the expense of the manager.

101. Duty not to make plans public
Copies of the plans referred to in regulations 97 to 100 or any information concerning them shall not be given by any public servant to any unauthorized person; nor shall they be inspected by any unauthorized person without the written permission of the manager: 
Provided that nothing in this regulation shall prevent officers of the Mines Division, Civil Engineering and Development Department showing or supplying to the public maps showing boundaries of titles and topography. (L.N. 214 of 1977; L.N. 42 of 1991; L.N. 364 of 1991; L.N. 104 of 2004)

102. Duty regarding abandonment of mine
Before a mine or any part of a mine is abandoned or closed down or rendered inaccessible, all underground plans shall be brought up to date, and copies thereof shall be deposited at the office of the Mines Division, Civil Engineering and Development Department.
(L.N. 214 of 1977; L.N. 42 of 1991; L.N. 364 of 1991; L.N. 104 of 2004)