Miss. Code Ann. § 77-5-303

The board of supervisors of any county is expressly authorized to combine with any other county and/or municipality and/or counties and/or municipalities in the purchase and/or construction and/or the leasing and/or the acquiring of any of the properties enumerated in the preceding section of this article. For this purpose the boards of supervisors of the counties, and/or the governing authorities of the municipalities, are authorized and empowered to arrange by contract all the details for the erection, construction, maintenance, operation, and control of such property, the sharing of the costs, and/or the distribution of power, and the selection of a governing body to control and handle said property.