§ 864. Combustible materials and rock dusting
444 words·~2 min read·
/usc/title-30/section-864A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(a)Accumulations; maintenance Coal dust, including float coal dust deposited on rock-dusted surfaces, loose coal, and other combustible materials, shall be cleaned up and not be permitted to accumulate in active workings, or on electric equipment therein.
(b)Abatement of hazards in active working areas Where underground mining operations in active workings create or raise excessive amounts of dust, water or water with a wetting agent added to it, or other no less effective methods approved by the Secretary or his authorized representative, shall be used to abate such dust. In working places, particularly in distances less than forty feet from the face, water, with or without a wetting agent, or other no less effective methods approved by the Secretary or his authorized representative, shall be applied to coal dust on the ribs, roof, and floor to reduce dispersibility and to minimize the explosion hazard.
(c)Rock dusting of all areas of underground mines; exceptions All underground areas of a coal mine, except those areas in which the dust is too wet or too high in incombustible content to propagate an explosion, shall be rock dusted to within forty feet of all working faces, unless such areas are inaccessible or unsafe to enter or unless the Secretary or his authorized representative permits an exception upon his finding that such exception will not pose a hazard to the miners. All crosscuts that are less than forty feet from a working face shall also be rock dusted.
(d)Distribution of rock dust; places, quantities Where rock dust is required to be applied, it shall be distributed upon the top, floor, and sides of all underground areas of a coal mine and maintained in such quantities that the incombustible content of the combined coal dust, rock dust, and other dust shall be not less than 65 per centum, but the incombustible content in the return aircourses shall be no less than 80 per centum. Where methane is present in any ventilating current, the per centum of incombustible content of such combined dusts shall be increased 1.0 and 0.4 per centum for each 0.1 per centum of methane where 65 and 80 per centum, respectively, of incombustibles are required.
(e)Limitation of applicability Subsections
(b)through
(d)of this section shall not apply to underground anthracite mines.
(Pub. L. 91–173, title III, § 304, Dec. 30, 1969, 83 Stat. 774.)
Connections12 cite this · traces to 1
Cited by 12 sections · top 8
Traces to 1 document
4 references not yet in our index
- Pub. L. 91–173, title III, § 304
- 83 Stat. 774
- Pub. L. 91–173
- section 509 of Pub. L. 91–173
Citation graph
cites case law
§ 864
Combustible materials and rock dusting
Bills×11
Stat. Comp.×1
Pub. L.Pub. L. 91–173, title III, § 304
Stat.83 Stat. 774
Pub. L.Pub. L. 91–173
Pub. L.section 509 of Pub. L. 91–173
Cites 5Cited by 12 across 2 sources