Though the
Original Mine was underway by 1878, the three remaining structures on the site, the headframe, the compressor house and the hoist house weren't constructed until about 1900. The air compressors within the compressor house were what provided all the power for the mine's rock drills, as well as any other equipment that operated underground.
The compressor house, the hoist house and the 100 foot tall (or more) steel headframe have been saved from demolition and are now displayed as historic artefacts, representative of the city's copper mining heritage. This is entirely appropriate, as Butte, for more than a century was the "copper mining king" of the world, producing more copper (as well as zinc, lead, silver and gold) than any other city in the world. From 1880 to 2000 the Butte Hill produced 22,799,000,000 pounds of copper, 4,909,202,540 pounds of zinc, 725,486,448 ounces of silver and 2,922,466 ounces of gold.
The site of the Original Mine was restored beginning in 2009 and is now used as a concert venue, as well as a tourist draw.
A great deal of the copper was and is under the city and was mined by many mines which created over 10,000 miles of tunnels under the city with some shafts reaching deeper than a mile below the surface.