293.130. 1. The roadbed, rails, and all other elements ofthe track of all haulage roads in mines shall be constructed,installed, and maintained in a manner consistent with speed andtype of haulage operations being conducted to insure safeoperation. Mine locomotives must be maintained so that brakesare adequate and in good order, sand riggings are operative andlocomotives in safe operating condition. An audible warningdevice and headlights shall be provided on each locomotive andshuttle car and truck. A trip-light or reflecting signal shallbe used on the rear of trips pushed or pulled by a locomotive andon the front of trips lowered into slopes. Other rolling stockmust be maintained so that its condition does not entail unduehazards to transportation crews or to workmen whose dutiesrequire them to work around the haulage.
2. Gasoline engines shall not be used underground unlessequipped with proper safeguards to prevent the emission of gasesthat cause a contamination of the air beyond the limits set forthin section 293.120.
3. Other than the motorman and trip rider, no person shallride on a locomotive unless authorized by the mine foreman, andno person shall ride on loaded cars or between cars of any trip,except that the trip rider may ride on the last car.
4. Man trips shall not be run in excess of the speeddetermined by the director nor shall more men ride in any one carthan the number ordered by the director.
5. Uniform haulage signals and a traffic control systemshall be adopted for each mine or mines operated, and shall becomplied with by all haulage crews.
(L. 1959 S.B. 188 ยง 14)