Each stockyard owner, market agency, dealer, packer, swine contractor, and live poultry dealer, upon proper request, shall permit authorized representatives of the Secretary to enter its place of business during normal business hours and to examine records pertaining to its business subject to the Act, to make copies thereof and to inspect the facilities of such persons subject to the Act. Reasonable accommodations shall be made available to authorized representatives of the Secretary by the stockyard owner, market agency, dealer, packer, swine contractor, or live poultry dealer for such examination of records and inspection of facilities.