[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR77]

[Page 648]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 77_MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK 
AREAS OF UNDERGROUND COAL MINES--Table of Contents
 
     Subpart J_Low- and Medium-Voltage Alternating Current Circuits
 
Sec.  77.900-2  Testing, examination, and maintenance of circuit 
breakers; record.

    The operator shall maintain a written record of each test, 
examination, repair or adjustment of all circuit breakers protecting 
low- and medium-voltage circuits serving three-phase alternating current 
equipment and such record shall be kept in a book approved by the 
Secretary.

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