[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: 30CFR20.2]

[Page 128]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 20--ELECTRIC MINE LAMPS OTHER THAN STANDARD CAP LAMPS--Table of Contents
 
Sec. 20.2  Definitions.

    (a) Adequate. Appropriate and sufficient as determined by mutual 
agreement between the manufacturer and MSHA.
    (b) Approval. Official notification in writing from MSHA to a 
responsible organization, stating that upon investigation its lamp has 
been adjudged satisfactory under the requirements of this part.
    (c) Explosion-proof compartment. An enclosure that withstands 
internal explosions of methane-air mixtures without damage to itself or 
discharge of flame and without ignition of surrounding explosive 
methane-air mixtures.
    (d) Permissible. Completely assembled and conforming in every 
respect with the design formally approved by MSHA under this part. 
(Approvals under this part are given only to equipment for use in gassy 
and dusty mines.)

[Sched. 10C, May 17, 1938, as amended by Supp. 1, 20 FR 2718, Apr. 23, 
1955]