Split samples shall be collected by providers who are certified as complying with standards and procedures set out in the United States Department of Transportation's rule, 49 C. F. R. Part 40, which may be amended, from time to time, by legislative rule of the Office of Miners' Health, Safety, and Training. Collected samples shall be tested by laboratories certified by the United States Department of Health and Human Services, Substance Abuse and Mental Health Services Administration (SAMHSA) for collection and testing. Notwithstanding the provisions of this subdivision, the mine operator may implement a more stringent substance abuse screening policy and program;
W. Va. Code § 22A-1A-1