Freeport-McMoRan EMD GP38/38-2 locomotives work hard on a train of loaded acid tank cars curving through corral cut while climbing the steep three to five percent grade from the Arizona Eastern Railway interchange at Clifton, Arizona, to the FMI facilities at Morenci on October 23, 2020. FMI GP38 No. 51 still wears the blue, white and red colors of former owner Phelps-Dodge.