[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: 30CFR19.13]

[Page 127]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 19--ELECTRIC CAP LAMPS--Table of Contents
 
Sec. 19.13  Instructions for handling future changes in lamp design.

    All approvals are granted with the understanding that the 
manufacturer will make his lamp according to the drawings which he has 
submitted to MSHA and which have been considered and included in the 
approval. Therefore, when he desires to make any change in the design of 
the lamp, he should first of all obtain MSHA's approval of the change. 
The procedure is as follows:
    (a) The manufacturer shall write to Approval and Certification 
Center, RR 1, Box 251, Industrial Park Road, Triadelphia, WV 26059, 
requesting an extension of the original approval and stating the change 
or changes desired. 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 
approval or disapproval of the change by letter from MSHA.
    (d) If tests are judged necessary, the applicant will be advised of 
the material that will be required.

[Sched. 6D, 4 FR 4003, Sept. 21, 1939, as amended by Supp. 1, 20 FR 
2718, Apr. 23, 1955; 43 FR 12314, Mar. 24. 1978; 52 FR 17514, May 8, 
1987; 60 FR 35693, July, 11, 1995]