[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR71.700]

[Page 438-439]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 71--MANDATORY HEALTH STANDARDS--SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES--Table of Contents
 
                    Subpart H--Airborne Contaminants
 
Sec. 71.700  Inhalation hazards; threshold limit values for gases, dust, fumes, mists, and vapors.


    (a) No operator of an underground coal mine and no operator of a 
surface coal mine may permit any person working at a surface 
installation or surface worksite to be exposed to airborne contaminants 
(other than respirable coal mine dust, respirable dust containing 
quartz, and asbestos dust) in excess of, on the basis of a time-weighted 
average, the threshold limit values adopted by the American Conference 
of Governmental Industrial Hygienists in ``Threshold Limit Values of 
Airborne Contaminants'' (1972) which is hereby incorporated by reference 
and made a part hereof. Excursions above the listed threshold limit 
values shall not be of greater magnitude than is characterized as 
permissible by the conference. This paragraph does not apply to airborne 
contaminants given a ``C'' designation by the conference in the 
document. This document is available for examination at the Mine Safety 
and Health Administration, Department of Labor, 1100 Wilson Blvd., Room 
2424, Arlington, Virginia 22209-3939; at every Coal Mine Health and 
Safety District and Subdistrict Office; at the National Institute for 
Occupational Safety and Health, 5600 Fishers Lane, Rockville, MD; and at 
the Public Health Service Information Centers listed in 45 CFR 5.31. 
Copies of the document may be purchased from the Secretary-Treasurer, 
American Conference of Governmental Industrial Hygienists,

[[Page 439]]

Post Office Box 1937, Cincinnati, OH 45202.
    (b) All persons, including employees, shall be withdrawn from any 
area in which there is a concentration of an airborne contaminant given 
a ``C'' designation by the Conference which exceeds the threshold limit 
value (ceiling ``C'' limit) listed for that contaminant.

[37 FR 6368, Mar. 28, 1972, as amended at 39 FR 17101, May 13, 1974; 43 
FR 12319, Mar. 24, 1978. Redesignated at 45 FR 80756, Dec. 5, 1980, as 
amended at 67 FR 38385, June 4, 2002]