High Voltage Insulators Insulators to take in the AC from Great Falls and Montana Power Co. Similar Images ...based on the tags: insulators, power... Ducking the steam lines overhead between the mixers and compressors, a water tower says “good morning,” right past the slack power lines. This is the sleepy uptown of the war city. The iconic outline of a prairie sentinel. Quintessential rural industrial architecture. Mammoth Mine overlooks Central City from atop Mammoth Hill. In the distance you can make out Coeur d’Alene Mine (red), which operated from 1885 through 1940. It’s like a piece of paper that’s been written on and rewritten, until you can’t read what the original message was. A typical rail shop. A damaged roof channeled rain onto the adobe walls, cutting them in half. In the distance, a preserved house and the ruins of the Colmor School. Platforms and abandoned outbuildings, as seen in 2005. The sidewalks are littered with rocks. Looking down the Gilman-Belden tram.