BN 6004 was Balmer Yard's principal hump engine in the mid-70s. The unit was GN's fifth SD7, part of a fleet of 23 SD7s and 27 SD9s, most of which were assigned to Minnesota. I enjoyed several eve... (more)

Seattle's Balmer Yard features a mini-hump, still in use in 2017. For years the hump was under the control of BN 6004, X-GN 554, a vintage SD7 that escaped the Mesabi Iron Range in northern Minnes... (more)