DescriptionThis photo was stamped A. Hunt on the back. The miners are on a trolley powered mule. This also has a battery traier to allow it to operate where there is no trolley wire. It is hauling a "rake" of gable cars. The trolley wire is protected from accidental touching by wooden guard boards wher personnel work or walk.RightsPublic DomainCollectionReginald O'BrienSubjectMiningMining SitesMining EquipmentMining Personnel