S.C. Code § 58-17-3410
All railway companies having railroad shops in this State at division points, where cars are regularly taken out of trains for repairs or construction work or where other railroad equipment is regularly made, repaired, or constructed, must furnish or construct a building or shed in the shops or yards, with a suitable and sufficient roof over the repair and construction track or tracks so as to provide that all men or employees employed in the construction and repair of locomotives, cars, trucks, or other railroad equipment, except when slight or minor repairs or repairs are done in an emergency, must be under shelter and protected during snow, rain, sleet, hot sunshine, and other inclement weather. The Office of Regulatory Staff may direct the points at which sheds shall be erected and the character of the sheds after a hearing before the Public Service Commission of which public notice has been given. Any railroad found guilty of violating the provisions of this section is subject to a fine of fifty dollars per day for every day of the violation.
S.C. Code § 58-17-3410