Abstract: A load bearing material handling system including a rail having a hanger portion, a body portion defining a conduit extending for at least a portion of the length of the rail and a flange portion adapted to movably support a trolley thereupon. The flange portion includes at least one runway surface and at least one kick up surface disposed in spaced relationship with respect to the runway surface so as to define a mounting surface disposed therebetween and which is adapted to support an electrical bus along at least a portion of the length of the rail. The rail supports a pneumatic trolley having a pair of opposed frame members and a housing extending therebetween and which is adapted to supply air to a pneumatically actuated tool which is movably supported by the trolley along the rail.