Inspections shall be conducted by the State agency with whom an agreement has been made under this part in order to determine the extent of compliance by Government contractors subject to the Act (as determined by the Department of Labor) with the safety and health provisions interpreted or applied in part 50-204 of this chapter. Inspectors of the State agency shall be considered authorized representatives of the Secretary of Labor in making inspections including the examining of the records of the Government contractor maintained under §§50-201.501 and 50-201.502 of this chapter. Inspections shall be made upon request of the Department of Labor or concurrently with inspections made to ascertain the compliance by employers with State safety and health requirements.