30 C.F.R. § 57.7802 Oxygen hose lines.
Title 30 - Mineral Resources
Safety chains or other suitable locking devices shall be provided across connections to and between high pressure oxygen hose lines of 1-inch inside diameter or larger.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart F—Drilling and Rotary Jet Piercing
Rotary Jet Piercing—Surface Only
§ 57.7802 Oxygen hose lines.
