30 C.F.R. § 75.1101-17 Sealing of dry powder chemical systems.
Title 30 - Mineral Resources
Each dry powder chemical system shall be adequately sealed to protect all components of the system from moisture dust, and dirt.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart L—Fire Protection
§ 75.1101-17 Sealing of dry powder chemical systems.
