30 U.S.C.
United States Code, 2019 Edition
Title 30 - MINERAL LANDS AND MINING
CHAPTER 22 - MINE SAFETY AND HEALTH
SUBCHAPTER II - INTERIM MANDATORY HEALTH STANDARDS
Sec. 845 - Dust standards in presence of quartz
From the U.S. Government Publishing Office, www.gpo.gov

§845. Dust standards in presence of quartz

In coal mining operations where the concentration of respirable dust in the mine atmosphere of any working place contains more than 5 per centum quartz, the Secretary of Health and Human Services shall prescribe an appropriate formula for determining the applicable respirable dust standard under this subchapter for such working place and the Secretary shall apply such formula in carrying out his duties under this subchapter.

(Pub. L. 91–173, title II, §205, Dec. 30, 1969, 83 Stat. 765; Pub. L. 96–88, title V, §509(b), Oct. 17, 1979, 93 Stat. 695.)

Change of Name

"Secretary of Health and Human Services" substituted in text for "Secretary of Health, Education, and Welfare" pursuant to section 509(b) of Pub. L. 96–88 which is classified to section 3508(b) of Title 20, Education.

Effective Date

Section operative six months after Dec. 30, 1969, except to the extent an earlier date is specifically provided for in Pub. L. 91–173, see section 509 of Pub. L. 91–173, set out as a note under section 801 of this title.