Code of Federal Regulations Title 30. Mineral Resources § 30.75.1107–14 Guards and handrails;  requirements where fire suppression devices are employed

All unattended underground equipment provided with fire suppression devices which are mounted in dead end entries, enclosed rooms or other potentially hazardous locations shall be equipped with adequate guards at moving or rotating components. Handrails or other effective protective devices shall be installed at such locations where necessary to facilitate rapid egress from the area surrounding such equipment.