(a) Shots shall be fired by a qualified person or a person working in
the presence of and under the direction of a qualified person.
(b) Only one face in a working place shall be blasted at a time,
except that when blasting cut coal up to three faces may be blasted in a
round if each face has a separate kerf and no more than a total of 20 shots
connected in a single series are fired in the round. A permit to fire more
than 20 boreholes in a round under the provisions of 30 CFR
75.1320 and 75.1321 may not be
obtained for use when blasting multiple faces.
(c) Before blasting--
(1) All persons shall leave the blasting area and each
immediately adjacent working place where a hazard would be created by the
blast, to an area that is around at least one corner from the blasting
area;
(2) The qualified person shall ascertain that all persons
are a safe distance from the blasting area; and
(3) A warning shall be given and adequate time allowed for
persons to respond.
(d) All shots shall be fired promptly, after all persons have been
removed to a safe location.
[35 FR 17890, Nov. 20, 1970, as amended at 56 FR 51616, Oct. 11, 1991]
