Never been on this discussion board before, but thought I'd provide a little more detail about Loweth, etc. The substation building is actually only 44 miles west of Harlowton and lies just to the south of Hwy 294. It sits on private property, but I've never seen anyone around on my visits. Granted, the last time I was there was back in 2002.

As was standard, the Milwaukee ROW passed in front--north--of the substation, but that was changed in 1956 when Laurence Wylie, trying to improve the electrification's efficiency, had the line rerouted in a deep cut behind the transformer room. This realignment eliminated the ruling 2.1 percent climb up from Bruno by substituting a 1.4 percent grade instead. Although the grade was a mere five miles in length, it often required freight trains to double the hill--even behind paired Joes. The grade reduction notwithstanding, this climb plagued the Milwaukee to the end. Helpers were never assigned there, but back in the 1930's they were sometimes assigned to eastbound freights out of Lombard. The long one percent climb and excessive curvature with the confines of the canyon necessitated this action.

West of the substation building, the remnants of an old block signal were extant on my last visit, but it was in bad shape. Westward from Loweth the line wound down the hill through Hamen and then passed under Hwy 87 (or maybe 89--not sure) as it entered Ringling. From there it headed for Montana Canyon (Sixteenmile Canyon) on its way to Lombard and eventually Three Forks. From what I've read online it's pretty tough, if not impossible, to access much of the route between Sixteen and the bridge across the Missouri. If you manage to rstrace some of the route in this locale, watch out for rattlers!

Anyway, hope this helps a bit. Enjoy your visit.