30 CFR § 15.4
Application procedures and requirements.
(a) Application. Requests for an approval or an extension of
approval under this part shall be sent to: U.S. Department of Labor,
Mine Safety and Health Administration, Approval and Certification
Center, 765 Technology Drive, Triadelphia, WV 26059.
(b) Fees. Fees calculated in accordance with Part 5 of this
Title shall be submitted in accordance with §5.40.
(c) Original approval for explosives. Each application for
approval of an explosive shall include--
(1) A technical description of the explosive, including
the chemical composition of the explosive with tolerances for each
ingredient;
(2) A laboratory number or other suitable designation
identifying the explosive. The applicant shall provide the brand or trade
name under which the explosive will be marketed prior to issuance of the
approval;
(3) The lengths and diameters of explosive cartridges for
which approval is requested;
(4) The proposed minimum product firing temperature of the
explosive; and
(5) The name, address, and telephone number of the
applicant's representative responsible for answering any questions regarding
the application.
(d) Original approval for sheathed explosive units. Each
application for approval of a sheathed explosive unit shall include--
(1) A technical description of the sheathed explosive unit
which includes the chemical composition of the sheath, with tolerances for
each ingredient, and the types of material used for the outer covering;
(2) The minimum thickness weight, and specific gravity of
the sheath and outer covering;
(3) The brand or trade name, weight, specific gravity, and
minimum product firing temperature of the approved explosive to be used in
the unit;
(4) The ratio of the weight of the sheath to the weight of
the explosive; and
(5) The name, address and telephone number of the
applicant's representative responsible for answering any questions regarding
the application.
(e) Subsequent approval of a similar explosive or sheathed
explosive unit. Each application for approval of an explosive or sheathed
explosive unit similar to one for which the applicant already holds an
approval shall include--
(1) The approval number of the explosive or sheathed
explosive unit which most closely resembles the new one;
(2) The information specified in paragraphs (c) and (d) of
this section for an original approval, as applicable, except that any
document which is the same as the one listed by MSHA in the prior approval
need not be submitted but shall be noted in the application; and
(3) An explanation of all changes from the existing
approval.
(f) Extension of the approval. Any change in an approved
explosive or sheathed explosive unit from the documentation on file at MSHA
that affects the technical requirements of this Part shall be submitted for
approval prior to implementing the change.
(1) Each application for an extension of approval shall
include--
(f)(1)(i) The MSHA-assigned approval number for the explosive
or sheathed explosive unit for which the extension is sought;
(f)(1)(ii) A description of the proposed change to the
approved explosive or sheathed explosive unit; and
(f)(1)(iii) The name, address, and telephone number of the
applicant's representative responsible for answering any questions regarding
the application.
(2) MSHA will determine what tests, additional
information, samples, or material, if any, are required to evaluate the
proposed change.
(3) When a change involves the chemical composition of an
approved explosive or sheathed explosive unit which affects the firing
characteristics, MSHA may require the explosive or sheathed explosive unit to
be distinguished from those associated with the former composition.
[FR 46761, Nov. 18, 1988; 54 FR 351, Jan. 5, 1989; 60 FR 33719, June 29, 1995]