[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 641]
 
                       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 F_Electrical Equipment_General
 
Sec.  77.513  Insulating mats at power switches.

    Dry wooden platforms, insulating mats, or other electrically 
nonconductive material shall be kept in place at all switchboards and 
power-control switches where shock hazards exist. However, metal plates 
on which a person normally would stand and which are kept at the same 
potential as the grounded, metal, non-current-carrying parts of the 
power switches to be operated may be used.