[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: 30CFR18.45]

[Page 102-103]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 18--ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES--Table of Contents
 
             Subpart B--Construction and Design Requirements
 
Sec. 18.45  Cable reels.

    (a) A self-propelled machine, that receives electrical energy 
through a portable cable and is designed to travel at speeds exceeding 
2.5 miles per hour, shall have a mechanically, hydraulically, or 
electrically driven reel upon which to wind the portable cable.
    (b) The enclosure for moving contacts or slip rings of a cable reel 
shall be explosion-proof.
    (c) Cable-reel bearings shall not constitute an integral part of a 
circuit for transmitting electrical energy.
    (d) Cable reels for shuttle cars and locomotives shall maintain 
positive tension on the portable cable during reeling and unreeling. 
Such tension shall only be high enough to prevent a machine from running 
over its own cable(s).
    (e) Cable reels and spooling devices shall be insulated with flame-
resistant material.
    (f) The maximum speed of travel of a machine when receiving power 
through a portable (trailing) cable shall not exceed 6 miles per hour.

[[Page 103]]

    (g) Diameters of cable reel drums and sheaves should be large enough 
to prevent undue bending strain on cables.