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

(3) Where haulage is effected by one or more ropes, there shall be provided and maintained -
(a) at the top of every inclined plane, at least one stop-block or other effective contrivance to arrest tubs
from running or moving out of control;
(b) at least one run way switch or other effective contrivance below the first stop-block or other effective
contrivance at a distance greater than the length of a set or train of tubs:
Provided that such distance shall not exceed the length of a set or train of tubs by more than 10 metres:
Provided further that where the Regional Inspector, by an order in writing so requires, the stop-block and
the switch or other effective contrivance aforesaid shall be so intercoupled that they do not remain
simultaneously ineffective:
(c) an attachment, behind an ascending tub or set or train of tubs, of a back-stay, drag or other suitable
contrivance for preventing the tub, set or train of tubs running back. Where an endless rope or chain is
used, the provisions of this clause shall be deemed to be satisfied if suitable automatic catches or other
effective contrivance are provided at suitable intervals along the track to prevent the ascending tubs running
back :
Provided that the Regional Inspector may, by an order in writing and subject to such conditions as he may
specify therein, grant exemption from the operation of this clause on grounds that compliance with the
provisions thereof is not reasonably practicable;
(d) safety hooks, jazz-rails or other suitable contrivances to prevent runaway in the forward direction;
(e) tub re-railers at intervals of not more than 250; and
(f) on every haulage roadway exceeding 30 metres in length, effective means of transmitting signal from
every stopping place on the roadway to the place at which the machinery working the rope is operated. All
signals shall be transmitted by mechanical or electrical means:
Provided that the Regional Inspector may, by an order in writing, require means of transmitting signals in
the reverse direction also. If any doubt arises as to whether any means of transmitting signal is effective or
not, it shall be referred to the Chief Inspector for decision.
(4)(a)(i) The following code of signals shall be used and strictly observed –
ONE RAP .. STOP when in motion
TWO RAPS .. LOWER or haul in slowly
THREE RAPS .. START when at rest
FOUR RAPS .. RAISE or haul out slowly
Any other signals shall be in addition to, and shall not interfere with, the foregoing.
Provided that the Chief Inspector may, by an order in writing an subject to such conditions as he
may specify therein, permit the use of any code of signals other than that specified above.
(ii) A printed copy of the code of signals, including additional signals, if any, shall be posted prominently at
the place in which the machinery that works the rope is operated and at all regular stopping places along the
roadway.
(iii) No person, other than a competent persons or an official, shall give any signal.
(b) Where in any mine belowground, a system of haulage roadway (and conveyors, if any) extent to
distance of more than 600 metres from the shaft or the entrance to the mine, efficient telephonic