Exemption
in respect of pros- pecting abafte.
Duty to fance un- derground entrances.
Chaly to provide protection against materials.
Duty to report danger.
Duty to
Becure un- safe work. inga, and to keep reserve of timber.
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(d) the various intermediate stations for the time being in use, but this paragraph shall not apply to signalling apparatus used during sinking operations.
(2) A mines officer may in writing exempt any shaft from the whole or part of the requirements of paragraph (1) and any exemption may be varied or revoked by a mines officer at seven days' notice. An appeal shall lie from any such variation or revocation to the Superintendent of Mines.
(3) Where more than one winding engine is in use at a shaft, a separate set of signals, as required in paragraph (1) shall be provided for each winding engine in use.
$6. Prospecting shafts where winding is done by manual or animal power may be exempted by a mines officer from the provisions of regulations 48, 52, 53 and 55.
57. All underground entrances to shafts or other dangerous places which are temporarily or permanently abandoned shall be securely fenced across the whole width of the entrances so that no person can unintentionally enter them.
58. (1) Where the underground entrances referred to in regulation 57 or steeply inclined stopes lead directly into a main drive, it and any working situate on its lower or “dip" side, shall be securely fenced off in order to ensure that persons working therein shall not receive injury from falling materials.
(2) Any gang foreman who has reason to believe that any part of the hanging wall or any other part of a mine is in a dangerous condition shall inform-
(4) his superior forthwith who shall take all necessary steps
to remove the danger; and
(b) the foreman of any gang which may relieve his gang.
59. (0) Where the ground is not naturally safe, every work- ing or pumping shaft, travelling road, airway, working, adit. level, cross-cut, stope and underground passage, shall be securely timbered, walled up, or otherwise made secure, and kept in a safe No person, unless condition as long as they are in actual use. appointed for the purpose of making explorations or repairs, shall travel or work therein until they are properly secured,
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(2) Where the ground is not naturally safe in any working, there shall, in addition to the requirements in paragraph (1), be a sufficient reserve of suitable timber conveniently placed for the immediate use of the workmen employed therein.
60. (1) On the inside of the boundary lines of every mide Duty to there shall be safety pillars of the width, measured at right angles provide from the boundary lines, of--
() in stratified deposits, not less than fifty feet; and (b) in non-stratified deposits, not less than thirty feet.
(2) On the joint application of the licensees or lessccs of adjoining mines, the Superintendent of Mines may give written permission to either party to weaken, cut through or work their respective pillars between the mines. In the absence of a joint application he may give written permission for the partial working, weakening or cutting through of the pillars.
safety pillars. Power of Superinten dent in reepact of pillars.
61. Underground workings, in particular shafts, sumps and Duty to winzes, which have been in disuse, shall be examined before being examine
disused again used for the purpose of ascertaining whether foul air or workings
before other dangerous gases have accumulated therein. Only such
reopening. workmen as may be necessary to make the examination shall be allowed to proceed therein until they are fit for use.
62, All parts of every underground working shall be Ventilation properly and sufficiently ventilated to the satisfaction of a mines require- officer.
ment.
63. In every mine the quantity of air in circulation shall be Duty to measured, at least once per month, and entered in a book kept take air for the purpose at the mine.
64. All ventilation doors shall be self-closing.
measure- ment.
Ventilation doors.
65. Unless written exemption has been obtained from the Percussive Superintendent of Mines, percussive drills shall have a central drille. water feed.
66. Adequate stationary lights shall be provided- (a) during working hours-
Duty to provide *lationary lights.
(i) at all stations in vertical and inclined shafts; and