Miss. Code § 77-9-513
Each railroad policeman commissioned under Sections 77-9-501 through 77-9-517 shall pay to the commissioner of public safety a fee of twenty dollars ($20.00) for the issuance of such commission, and shall file a bond in the sum of fifty thousand dollars ($50,000.00) with the commissioner of public safety, for the lawful and faithful performance of his duties. The cost of the permit and bond shall be borne by the railroad requesting the appointment of such railroad police officer. The filing of such bond shall not relieve any railroad from any civil liability it may otherwise incur in accordance with the provisions of Section 77-9-509. Any railroad requesting and obtaining the appointment and commission of a railroad policeman under the provisions of Sections 77-9-501 through 77-9-517 shall indemnify and hold the State of Mississippi, the commissioner of public safety, and any sheriff executing a written permission as provided herein harmless from any and all liability which any or all of them might otherwise incur for the negligent or unlawful acts of said railroad police officer.
Miss. Code § 77-9-513