Regulation 50 Use of safety fuse with attached igniter in mines of shale
Notwithstanding anything in regulation forty-four or forty-seven, if an inspector is of opinion that it is expedient to allow the firing of shots in any part of a mine to which this Part of these regulations applies, being a mine of shale, by means of safety fuse ignited by means of an igniter contained in a tube and attached to the fuse in such manner as to form a completely closed chamber, he may by notice served on the manager—
(a)
exempt that part of the mine from the application of the said regulation forty-four; and
(b)
authorise the firing of shots therein by those means.