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Where is it? There is a mesabi range in minnesota
>>2076727Presumably that's what he meant. DMIR ore jennies had a seperate brake pipe/valve. It's called "straight air" or Orinoco retainer. There is a seperate handle on the engine to set up the brakes and it can be maintained as you use your normal automatic brake. The Orinoco *retainer* name hints at its intended use. It basically takes the place of a conductor going back and flipping some retaining valves to hold a set on cars.This system still exists today with CN keeping captive AC44C6Ms in the area(3300-3350 mostly) being fitted with the straight air handle.
>>2076727>>2076731>The Mesabi Range was known to the local Ojibwe as Misaabe-wajiw ('Giant mountain').[1][2] Throughout the Mesabi Range, Mesaba and Missabe spelling variations are found along with places containing Giant in their names.
I guess it's like allegany/allegheny/alleghany where there's a bunch of places around that drainage basin where they spammed a different transliteration onto it because there was no agreed system at the time
