Persons shall not be transported--
(a) In or on dippers, forks, clamshells, or buckets except shaft buckets during shaft-sinking operations or during inspection, maintenance and repair of shafts.
(b) In beds of mobile equipment or railcars, unless-
(c) On top of loads in mobile equipment;
(d) Outside cabs, equipment operators' stations, and beds of mobile equipment, except when necessary for maintenance, testing, or training purposes, and provisions are made for secure travel. This provision does not apply to rail equipment.
(e) Between cars of trains, on the leading end of trains, on the leading end of a single railcar, or in other locations on trains that expose persons to hazards from train movement.
(f) To and from work areas in overcrowded mobile equipment;
(g) In mobile equipment with materials or equipment unless the items are secured or are small and can be carried safely by hand without creating a hazard to persons; or
(h) On conveyors unless the conveyors are designed to provide for their safe transportation.
053-3 Wyo. Code R. § 57.9200