30 CFR § 15.2
The following definitions apply in this part.
An individual or organization that manufactures or
controls the production of an explosive or an explosive unit and that applies
to MSHA for approval of that explosive or explosive unit.
A document issued by MSHA which states that an explosive or
explosive unit has met the requirements of this part and which authorizes an
approval marking identifying the explosive or explosive unit as approved as
A substance, compound, or mixture, the primary purpose of which is
to function by explosion.
Extension of approval.
A document issued by MSHA which states that
the change to an explosive or explosive unit previously approved by MSHA
under this part meets the requirements of this part and which authorizes the
continued use of the approval marking after the appropriate extension number
has been added.
Minimum product firing temperature.
The lowest product temperature at
which the explosive or explosive unit is approved for use under this
Post-approval product audit.
Examination, testing, or both, by MSHA
of approved explosives or explosive units selected by MSHA to determine
whether they meet the technical requirements and have been manufactured as
A chemical compound or mixture incorporated in a sheathed
explosive unit and which forms a flame inhibiting cloud on detonation of the
Sheathed explosive unit.
A device consisting of an approved or
permissible explosive covered by a sheath encased in a sealed covering and
designed to be fired outside the confines of a borehole.
An instantaneous detonator that has a strength
equivalent to that of a detonator with a base charge of 0.40-0.45 grams
[FR 46761, Nov. 18, 1988; 54 FR 351, Jan. 5, 1989]