The Arizona Copper Company of Morenci, Arizona purchased five of these locomotives between 1882 and 1886 to haul ore on the Coronado railroad. The H. K. Porter Company of Pittsburgh, Pennsylvania manufactured Locomotive #2 in 1882. It ran on 20-inch tracks, 16 inches less than narrow gauge and 36 1/2 inches less than standard gauge tracks. The locomotive measured only 17 feet long by 5 feet 5 inches wide and weighed just 11 tons. It was abandoned in 1923 at the top of the steep 1,200-foot Coronado Incline, then recovered in 1990 from the top of the incline at Morenci Mine by Phelps Dodge Morenci, Inc., which donated it to the Arizona Department of Mines and Mineral Resources. Restoration funding was provided by the Arizona Heritage Fund and Phelps Dodge Morenci, Inc.