S.C. Code Ann. § 58-17-3460

Every railroad corporation must furnish immediate transportation for the Office of Regulatory Staff over its line to the place of accident occurring on its road and attended with any injury to any person of which it is required to give notice under the provisions of Section 58-17-3440, free of expense to the Office of Regulatory Staff and, if the Office of Regulatory Staff uses another railroad to reach the place of accident, the corporation on whose line the accident occurred must pay the expense of transportation thereon.