Item : Echoes from the Cincinnati coal convention, 1926; improved type 5BU Joy loader, 1926. Item : Joy 14-BU loader, [1940]. Item : Joy mine-air compressors; two stage, air cooled, [1950]. Item : Joy trackless equipment for high-capacity mining in low coal, [1950]. Item : Joy limberoller; the idler with flex appeal, [1950]. Item : Sullivan carpullers, [1950]. Item : Joy extensible belt conveyor; continuous haulage for continuous mining, [1950]. Item : The life-line of the mining industry; Joy belt conveyors, [1950]. Item : What's new in Joy products for coal mines, [1950]. Item : Joy stoppers for roof bolting, [1950]. Item : Joy hydro drill jibs, [1950].
