HO Cornerstone New River Mining Company KitThe prototypes for coal mine tipples like the Walthers Cornerstone New River Mining Company kit are typical of 1950s corrugated structures, many of which are still served today. Based on a trackside coal tipple for loading hoppers or gondolas, this easy to build kit features realistic corrugated metal construction, steel supports and separate ladders and stairways. New River is set up to load hoppers on three tracks, and if you're modeling a mine that