30 C.F.R. § 57.11004 Portable rigid ladders.
Title 30 - Mineral Resources
Portable rigid ladders shall be provided with suitable bases and placed securely when used.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart J—Travelways and Escapeways
Travelways—Surface and Underground
§ 57.11004 Portable rigid ladders.
