Sec. 502. Rock dust standards
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Section 304(d) ( 30 U.S.C. 864(d) ) is amended— by striking Where rock and inserting the following: Rock dust .— Where rock ; by striking 65 per centum and all that follows and inserting 80 percent. Where methane is present in any ventilating current, the percentage of incombustible content of such combined dusts shall be increased 0.4 percent for each 0.1 percent of methane. ; and by adding at the end the following: Each operator of an underground coal mine shall take accurate and representative samples which shall measure the total incombustible content of combined coal dust, rock dust, and other dust in such mine to ensure that the coal dust is kept below explosive levels through the appropriate application of rock dust.
In order to ensure timely assessment and compliance, the Secretary shall, not later than 180 days after the date of enactment of the Robert C. Byrd Mine Safety Protection Act of 2013 , require operators to measure total incombustible content (or an equivalent measure of explosibility) in samples of combined coal dust, rock dust, and other dust, using direct reading monitors that the Secretary has approved for use in an underground coal mine, such as coal dust explosibility monitors.
The Secretary shall, not later than 180 days after the date of enactment of the Robert C. Byrd Mine Safety Protection Act of 2013 , promulgate an interim final rule that prescribes methods for operator sampling of total incombustible content (or an equivalent measure of explosibility) in samples of combined coal dust, rock dust, and other dust using direct reading monitors and includes requirements for locations, methods, and intervals for mandatory operator sampling. Not later than 1 year after the date of enactment of the Robert C.
Byrd Mine Safety Protection Act of 2013 , the Secretary of Health and Human Services shall, based upon the latest research, recommend to the Secretary of Labor any revisions to the mandatory operator sampling locations, methods, and intervals included in the interim final rule described in subparagraph
(B)that may be warranted in light of such research. Until a final rule is issued by the Secretary under section 502(b)(2) of the Robert C. Byrd Mine Safety Protection Act of 2013 , any measurement taken by a direct reading monitor described in paragraph
(2)shall not be admissible to establish a violation in an enforcement action under this Act. Not later than 2 years after the date of enactment of the Robert C. Byrd Mine Safety Protection Act of 2013 , the Secretary of Health and Human Services, in consultation with the Secretary of Labor, shall prepare and submit, to the Committee on Education and the Workforce of the House of Representatives and the Committee on Health, Education, Labor, and Pensions of the Senate, a report— regarding whether any direct reading monitor described in paragraph (2)(B) is sufficiently reliable and accurate for the enforcement of the mandatory health or safety standards by the Secretary of Labor under such Act, and whether additional improvement to such direct reading monitor, or additional verification regarding reliability and accuracy, would be needed for enforcement purposes; and identifying any limitations or impediments for such use in underground coal mines. If the Secretary determines that such direct reading monitor is sufficiently reliable and accurate for the enforcement of mandatory health and safety standards under this Act following such report or any update thereto, the Secretary shall promulgate a final rule authorizing the use of such direct reading monitor for purposes of compliance and enforcement, in addition to other methods for determining total incombustible content. Such rule shall specify mandatory operator sampling locations, methods, and intervals. . Section 304 is further amended— by redesignating subsection
(e)as subsection
(f)and inserting after subsection
(d)the following: Each coal mine shall be required to maintain and continuously update a record of the amount of rock dust purchased. ; and in subsection
(f)(as so redesignated), by striking Subsection
(b)through
(d)and inserting Subsection
(b)through
(e).
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Sec. 502
Rock dust standards
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