Ore Chute Ruins inside the Gold Prince Mill-(C)SUSBTREET.org Some of the workings inside the ruins of the Gold Prince Mill are still obvious, such as this steel ore chute over that used to feed a floatation tank. Related Similar Images ...based on the tags: concrete, rocks, ruins... Like a railgun pointed at the Rockies… the boom would direct tailings–junk rock–outside of the dredge pond. Frontenac, as seen from the Missouri Flats area. The right portal used to go straight into the basement of the hotel, judging from the ruins. The Columbus Mine overlooks its mill, which was one of the last to operate in the region, thanks to the demand for industrial metals during World War II. More circa-1935 graffiti. The wood-braced structures descending the hill connected the La Crosse Tunnel to the mill in Central City. To see a picture of an aerial tram in action, see at my Treasure Mountain article. Taconite Harbor’s main road, now overgrown and leading to nothing. Just asphalt between caved-in curbs. Below the factory floor is a network of hallways and tunnels, all flooded with water. The ruins of the the Hubert Mine over the ruins of Nevadaville. Its ore was taken through the town to a mill below it.