Oregon adopts the federal subpart for tunnelling and shafts, caissons, cofferdams and compressed air work, so the employer meets the underground construction requirements for access and egress, check-in and check-out, safety instruction, notification and communication, emergency provisions including rescue teams, hazardous classification, air quality monitoring and ventilation, illumination, fire prevention, welding, ground support, blasting, drilling, haulage, electrical safety, hoisting and cranes (1926.800), the caisson requirements (1926.801), the cofferdam requirements for walkways, warning signals and flood protection (1926.802) and the compressed air requirements for medical attendance, locks, decompression, communication, signs and records (1926.803).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.