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John Tunnel, rail tunnel, in Sanders County, Montana northwest of Missoula, el. 2,680 feet (820 Monitor Tunnel , abandoned rail tunnel, in Butte , Silver Bow County, Montana , 46°01′24″N 112°28′32″W / 46.02333°N 112.47556°W / 46.02333; -112.47556 ( Monitor Tunnel ) , el. 6,361 feet (1,939
The Berkeley Pit is a former open pit copper mine in the western United States, located in Butte, Montana.It is one mile (1.6 km) long by one-half mile (800 m) wide, with an approximate maximum depth of 1,780 feet (540 m).
The Flathead Tunnel is a 7-mile-long (11 km) railroad tunnel in the Rocky Mountains of northwest Montana near Trego, approximately 28 miles (45 km) west of Whitefish. Located on the BNSF Railway 's Kootenai River Subdivision, it is the second-longest railroad tunnel in the United States after the Cascade Tunnel .
List of tunnels in Montana; P. Ptarmigan Tunnel This page was last edited on 24 December 2023, at 09:46 (UTC). Text is available under the Creative Commons ...
Operations were revived in 1900 under the Montana Consolidated Copper Company; in 1927, the Basin Montana Tunnel Company took over the property and built a processing plant on the site for both this mine and the nearby Gray Eagle mine. The company was the largest producer of base metals in the state, outside of Butte, due to production at this ...
The St. Paul Pass Tunnel was a railway tunnel in the northwest United States at St. Paul Pass, on the Montana-Idaho border. The tunnel was on the main line of the Chicago, Milwaukee, St. Paul & Pacific Railroad, [1] commonly known as "The Milwaukee Road." The pass is on the Bitterroot Range of northwestern Montana and the Idaho Panhandle.
The south-central Montana mine complex includes the Stillwater West and Stillwater East operations near Nye, and the East Boulder operation south of Big Timber. It has lost more than $350 million ...
The Anaconda Copper Mine was a large copper mine in Butte, Montana that closed operations in 1947 and was eventually consumed by the Berkeley Pit, a vast open-pit mine. [1] Originally a silver mine, it was bought for $30,000 in 1881 by an Irish immigrant named Marcus Daly from Michael Hickey, a Civil War veteran, and co-owner Charles X. Larabie ...