It's on the DLS as "OLM" Or Old Lucky Mill.
The route itself is interesting in that it's somewhat plausible. The idea is that back in the 1800's, coal was discovered in two large seams. The standard gauge line couldn't excatly reach it, without having to go through a long round about circuit. So the narrow gauge mine line was built. Using the "switchback" style they kept the grades reasonable, and could work the mine and bring loads down to the interchange. Over time, a small city grew up for the miners, linked by the stations. However, at the point the route exists it's the mid to late 20's. Trucks are now making their presence, and the construction of a pair of road bridges has pretty much done away with the need for the passenger service. There's sill some work, mostly minor held by a single combine (or in the photos a combine and coach.)
It won't be long, realistically speaking, before the mines start shipping loads out by truck, and thus the railroad is probably on its final days. More than likely in another five, maybe ten years the line will be abandoned, with trucking taking over the bulk of the work.
