[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: 30CFR20.14]

[Page 132]
 
                       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. 20.14  Instructions for handling future changes in lamp design.

    All approvals are granted with the understanding that the 
manufacturer will make the lamp according to the drawings submitted to 
MSHA, which have been considered and included in the approval. 
Therefore, when the manufacturer desires to make any change in the 
design of the lamp, the manufacturer should first obtain an extension of 
the original approval to cover the change. The procedure is as follows:
    (a) The manufacturer shall write to the Approval and Certification 
Center, RR 1, Box 251, Industrial Park Road, Triadelphia, WV 26059, 
requesting an extension of the original approval and describing the 
change or changes proposed. With this letter, the manufacturer should 
submit a revised drawing or drawings showing the changes in detail, and 
one of each of the changed lamp parts.
    (b) MSHA will consider the application and inspect the drawings and 
parts to determine whether it will be necessary to make any tests.
    (c) If no tests are necessary, the applicant will be advised of the 
acceptance or rejection of the proposed change by letter from MSHA.
    (d) If tests are judged necessary, the applicant will be advised of 
the material that will be required.

[Sched. 10C, May 17, 1938, as amended by Supp. 1, 20 FR 2719, Apr. 23, 
1955; 43 FR 12314, Mar. 24, 1978; 52 FR 17514, May 8, 1987; 60 FR 35693, 
July, 11, 1995]