Metalliferous Mines Regulations, 1961 - Directorate General of ...

mechanical ventilator was installed before the coming into force of these
regulations.
(5) The flow of air produced by a mechanical ventilator shall, as far as
practicable, be so arranged as to aid the natural ventilation.
(6) Every mechanical ventilator shall be in charge of a competent person
appointed for the purpose, who shall not be entrusted with any other
additional duties which may require him to go outside the fan house or which
may interfere with his duties as incharge of the mechanical ventilator.
(7) In every mine in which a mechanical ventilator is in use, the quantity of air
circulating in every ventilating district shall be measure once at least in every
30 days and recorded in a bound paged book kept for the purpose.
133. Standing Orders. – (1) For the purpose of ventilation, every mine shall be divided
into such number of districts or splits as to ensure that separate current of fresh air is
made available in every such district or split.
(2) The intake air shall be so arranged as to travel away from all stagnant water.
(3) In any mine or part where a mechanical ventilator is used, every drive,
crosscut, winze or rise which is a connection between a main intake airway
and a main return airway shall, until it has ceased to be required and has been
sealed off, be provided with at least two doors so spaced that whenever one
door is opened, the other door can be kept closed. Steps shall be taken or
ensure that at least one of the doors is always closed. Any such connection
which has ceased to be so required, shall be effectively sealed.
135. Brattices, doors, stoppings ad aircrossings. - (1) There shall be provided ad
maintained in every mine such number of stoppings , doors and other devices as may be
adequate to ensure compliance with the provision of regulations 131. If any doubt arises
as to the adequacy of such ventilation devices, it shall be referred to the Chief Inspector
for decision.
(2) (a) The space between the frame or every ventilation door and the roof and
sides of the road, shall be built up with masonry or concrete, not less than 25 centimetres
in thickness.
(b)Every such door shall be self-closing; and whenever opened, it shall be closed
as soon as possible, and shall not be propped or fixed so as to remain open.
(c) If such door is required to be frequently kept open for the passage of men or
material, there shall be, throughout every working shift, a door attendant at the
door.
(d) Unless required for purposes of control of fire or otherwise, if a door is not in
use, it shall be taken off its hinges and placed in such a position that it shall
not cause any obstruction to the air current.