Supports

Pages:18-19
CHAPTER VI
SUPPORTS
REGULATION 16. GENERAL PROVISIONS
1.
All mine workings shall at the time of their construction
be protected against falls of rock and coal and be maintained
in a safe condition for the whole time that they are in use.
2.
(1) The supports shall be of adequate strength and shall
be installed in accordance with specific rules (mine support rules)
to be laid down by the manager and supplemented or modified by
him as and when required.
(2) In the mine support rules, for every workplace, district
or seam, the method of supporting and the maximum intervals
between the various parts shall be specified, in particular the
intervals between
(a) supports on roadways;
(b) each row of props at the face;
(c) adjacent props in the same row;
(d) the front row of props and the face;
(e) holing props or sprags;
(f) chocks; and
(g) packs.
3.
Overhanging coal and sides that threaten to fall shall be
taken down or safeguarded against premature collapse by adequate
spragging.
4.
On roads, cavities in the roof shall be filled up as far as
practicable above the roof supports.
5.
When repairing, changing or withdrawing supports special
precautions shall be taken against falls of rock and coal.
6. In repairing fallen-in places the neighbouring supports shall
be specially protected against thrust.
7.
(1) Supports shall be withdrawn only under the general
charge of a supervisory official and only by experienced workers.
(2) The work shall be done from a safe place and a safe distance,
by.means of appropriate tools and safety contrivances, the pro-

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