[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: 30CFR72.630]

[Page 442-443]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 72--HEALTH STANDARDS FOR COAL MINES--Table of Contents
 
                        Subpart E--Miscellaneous
 
Sec. 72.630  Drill dust control at underground areas of underground mines.

    (a) Dust resulting from drilling in rock shall be controlled by use 
of permissible dust collectors, or by water, or water with a wetting 
agent, or by ventilation, or by any other method or device approved by 
the Secretary that is as effective in controlling the dust.
    (b) Dust collectors. Dust collectors shall be maintained in 
permissible and operating condition. Dust collectors approved under Part 
33--Dust Collectors for Use in Connection with Rock Drilling in Coal 
Mines of this title or under Bureau of Mines Schedule 25B are 
permissible dust collectors for the purpose of this section.
    (c) Water control. Water used to control dust from drilling rock 
shall be applied through a hollow drill steel or stem or by the flooding 
of vertical drill holes in the floor.

[[Page 443]]

    (d) Ventilation control. To adequately control dust from drilling 
rock, the air current shall be so directed that the dust is readily 
dispersed and carried away from the drill operator or any other miners 
in the area.