Miss. Code § 77-11-111
This article authorizes the Mississippi Public Service Commission to exercise jurisdiction over gas pipeline safety and inspection of gas districts or municipally owned and/or operated gas utilities or privately owned and operated gas pipelines which do not sell, transport or distribute gas to the public, and whose facilities are used for the intrastate transmission or distribution of natural, artificial and mixed natural and artificial gas, but all other operations, services and rates of gas districts or municipally owned and/or operated gas utilities or such privately owned and operated gas pipelines which do not sell, transport or distribute gas to the public shall remain exclusively with the gas districts or municipality or municipally owned and/or operated gas utility or with the owner and/or operator of such private pipeline not serving the public.
Miss. Code § 77-11-111