Two EMD's meet as the Lake Freighter St. Clair enters the St. Clair river in Port Huron, Mi just as the GTW 4927 pulls cars from the Dunn Paper company at the mouth of the river. The GTW 4927, powered by a single EMD 2000 HP, 16cyl engine is dwarfed by the 10,800 HP of the St. Clair that is derived from Three EMD V-20's built by the Electro-Motive Division of General Motors Corp., La Grange, IL.