As prescribed in 923.7003 the clause set forth at 970.5223-1 shall be included in all contracts and subcontracts for, and be made applicable to, work to be performed at a government-owned or leased facility where DOE has elected to assert its statutory authority to establish and enforce occupational safety and health standards applicable to the work conditions of contractor and subcontractor employees, and to the protection of the public health and safety. [49 FR 12042, Mar. 28, 1984, as amended at 59 FR 9109, Feb. 25, 1994; 65 FR 81008, Dec. 22, 2000; 74 FR 36369, July 22, 2009]