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From the cab of a mid-train helper set we look east as a mixed freight grinds upgrade around the "Tonga Loop", a horse shoe curve on the steep west slope. 2.2% grades, endless curvature, high bridges like the Foss River trestle seen here, and deep thick forests were and still are the hallmarks of Stevens' west slope. Helpers however, are unfortunately no longer part of the equation. Somewhere in the bowels of BN's accounting department they figured out that a few more, shorter trains, that don't need helpers would be cheaper than longer trains and the added personel and maintenance of a pusher fleet. This is reverting a little bit now with the advent of remote control "distibuted power", seen on the occasional train over the hill in the pst year or so.