S.C. Code Regs. § § 103-48
At all non-agency stations the railroads shall load and unload all less than carload shipments. The consignor or consignee shall load or unload all carload shipments. When a shipper at a non-agency station desires to make a carload shipment the order for empty car shall be placed with the conductor or the agent of the railroad at the nearest station, and said car shall be set off on the siding designated, loaded by the shipper and Bill of Lading issued by the nearest agent of the railroad in the direction the car moves. When a carload shipment is consigned to a non-agency station, the freight charges on which are prepaid, the car shall be set off at that point and unloaded by the consignee. Railroads shall not leave less than carload freight at non-agency stations when there is no one there to receive it if the weather is such as to cause damage, but the same shall be carried to the nearest station for protection and returned at the proper time.
S.C. Code Regs. § 103-48