[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 626] 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 C_Surface Installations Sec. 77.208 Storage of materials. (a) Materials shall be stored and stacked in a manner which minimizes stumbling or fall-of-material hazards. (b) Materials that can create hazards if accidentally liberated from their containers shall be stored in a manner that minimizes the dangers. (c) Containers holding hazardous materials must be of a type approved for such use by recognized agencies. (d) Compressed and liquid gas cylinders shall be secured in a safe manner. (e) Valves on compressed gas cylinders shall be protected by covers when being transported or stored, and by a safe location when the cylinders are in use. [36 FR 9364, May 22, 1971, as amended at 67 FR 42389, June 21, 2002]