With a pair of Bessemer tunnel motors bracketing an SD40-2W, Canadian National dock job R921 shoves out on to Dock 6 in Duluth, Minnesota with a train of loaded ore hoppers for unloading. Alongside the docks is the Interlake Steamship Company's 1942 built Lee A. Tregurtha getting ready to take another load of taconite pellets across the Great Lakes to the steel mills.