Oregon adopts the federal demolition subpart, so the employer has a competent person carry out an engineering survey of the structure's condition and the possibility of unplanned collapse before demolition begins, shuts off or protects utilities, protects adjacent structures and floor openings, and shores weakened walls and floors (1926.850), maintains protected stairs, passageways and ladders (1926.851), uses enclosed chutes with gates and warning signs (1926.852), controls removal of materials through floor openings, of walls, masonry sections and chimneys, of floors, and removal with equipment (1926.853 to 1926.856), limits storage on floors (1926.857), removes steel construction in sequence (1926.858), performs mechanical demolition with exclusion of employees from the swing area and inspections (1926.859) and conducts selective demolition by explosives under Subdivision U (1926.860).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.