[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: 30CFR75.1106-6] [Page 562] 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 L_Fire Protection Sec. 75.1106-6 Exemption of small low pressure gas cylinders containing nonflammable or nonexplosive gas mixtures. Small low pressure gas cylinders containing nonflammable or nonexplosive gas mixtures, which provide for the emission of such gas under a pressure reduced from a pressure which does not exceed 250 p.s.i.g., and which is manufactured and sold in conformance with U.S. Department of Transportation Special Permit No. 6029 as a calibration test kit for methane monitoring systems, shall be exempt from the requirements of Sec. Sec. 75.1106-2(c) and 75.1106-4(d), (f) and (g). [36 FR 22062, Nov. 19, 1971] Fire Suppression Devices and Fire-Resistant Hydraulic Fluids on Underground Equipment