Okla. Stat. tit. 63 § 1-1610
For the purpose of enforcing the provisions of this Article, carriers engaged in commerce, and persons receiving hazardous substances in commerce or holding such products so received, shall upon the request of an officer or employee duly designated by the State Commissioner of Health permit such officer or employee, at reasonable times, to have access to and to copy all records showing the movement in commerce of any hazardous substance or the holding thereof during or after such movement, and the quantity, shipper, and consignee thereof; and it shall be unlawful for any such carrier or person to fail to permit such access to and copying of any such records so requested when such request is accompanied by a statement in writing specifying the nature or kind of hazardous substance to which such request relates; provided, that evidence obtained under this section shall not be introduced in a criminal prosecution of the person from whom obtained.
Okla. Stat. tit. 63, § 1-1610