These are great additions. The Little Nation mill building shows in the satellite views with a red roof. This structure is owned by the San Juan County Historical Society and the grade of the Green Mountain branch is still very evident as it curves past the building. The Little Nation mill site has been subdivided up into several ownerships, but I think mostly in friendly hands.
Headed past the Little Nation, the tailings ponds of the current day Pride of the West mill in Howardsville cover the ROW, and these are currently under an operating bond from the state, now controlled by Colorado Goldfields (http://www.cologold.com/). Then the line runs through substantial wetlands with beaver ponds before getting to solid ground where the Hamlet and Kittimack spurs take off--but beware, all this is now private property and several of the current owners are at odds with people trooping across their property. The fellow who owns and lives on the parcel where the Kittimac spur leaves the mainline has been known to greet "tresspassers" with a shotgun in hand, and he owns one of the motels in town. Once past the Cole Ranch subdivision, the line enters Eureka, and that includes the reversing loop shown in the last overlay, and that's all friendly land.