[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: 30CFR75.1000] [Page 550] TITLE 30--MINERAL RESOURCES CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR PART 75_MANDATORY SAFETY STANDARDS_UNDERGROUND COAL MINES--Table of Contents Subpart K_Trolley Wires and Trolley Feeder Wires Sec. 75.1000 Cutout switches. [Statutory Provisions] Trolley wires and trolley feeder wires, shall be provided with cutout switches at intervals of not more than 2,000 feet and near the beginning of all branch lines.