UPDATE – Main Line – Menominee River to Ontonagon Two new photographs and additional information have been added to the Main Line – Menominee River to Ontonagon page. MILW 314 (GP9) leads a 140-car taconite train south past the depot at Iron Mountain, Mich., on 2 March 1965. Photograph from The Milwaukee Road Magazine, March-April 1965, page 19.MILW 314 (GP9) leads a 140-car taconite train south as it nears Iron Mountain, Mich., on 2 March 1965. Photograph from The Milwaukee Road Magazine, March-April 1965, back cover. You Might Also Like UPDATE – Appleton Branch December 13, 2021 Round Trip Ticket Price to Milwaukee in 1872 February 5, 2020 UPDATE – Reminders of the Champion Branch May 22, 2025