Miss. Code § 27-59-41
The commission shall have full access, ingress, and egress at all reasonable hours to and from any place or building where compressed gas may be received, stored, transported, sold, offered or exposed for sale, manufactured, refined, distilled, compounded or blended. The commission shall have the right to open and inspect any case, package, or other container, and any tank, pump, tank car or storage tank in which compressed gas is kept and enter upon any barge, vessel, or other vehicle transporting compressed gas and, with instruments conforming to the weights and measures adopted by the United States Bureau of Standards, check any measuring device or volume of weight of the contents of any such container.
The commission shall have the right, at any time, to stop any motor vehicle traveling on the highways of this state, and make any examination necessary to ascertain that the provisions of this chapter are complied with fully. The commission is also authorized to impound any motor vehicle operating in violation of this chapter and hold it until such time as all taxes and fines have been paid and until the owner or operator has obtained necessary permit decal or permit decals.
Miss. Code § 27-59-41