§ 24.0 - Authorization and purpose.

(a) Investigations under this part are conducted under the authorization of the Federal Mine Safety and Health Act of 1977 (Pub. L. 91-173, as amended by Pub. L. 95-164).

(b) The purpose of investigations under this part is to promote the development of safe types of single-shot blasting units that may be used in mines, especially in mines that may contain methane or inflammable dust in dangerous proportions. Lists of such units will be published from time to time so that State mine-inspection departments, compensation bureaus, mine operators, miners, and others interested in safe equipment for mines may have information regarding permissible blasting units. This part supersedes Schedule 12C issued under date of July 16, 1940 (30 CFR, 1943 Cum. Supp., Part 24), and goes into effect November 27, 1945.

(c) Any blasting unit that meets the requirements set forth in this part will be termed “permissible” by MSHA.

(d) Definition of permissible. Completely assembled and conforming in every respect with the design formally approved by MSHA under this part. (Approvals under this part are given only to equipment for use in gassy and dusty mines.)

(e) MSHA means the United States Department of the Interior, Mining Enforcement and Safety Administration. Predecessor organization to MSHA, prior to March 9, 1978.

(f) MSHA means the United States Department of Labor, Mine Safety and Health Administration.