7 facilities in Montana reported releasing a combined 10.7M pounds of copper compounds to air, water, and land in 2024.
| Facility | City | On-site (lb) |
|---|---|---|
| Montana Resources Llc | Butte | 10.5M |
| Colstrip Steam Electric Station | Colstrip | 80.1k |
| Stillwater Mining Co East Boulder Mine | Big Timber | 37.0k |
| American Chemet Corp | East Helena | 10.7k |
| Smc Precious Metals Smelter & Base Metals Refinery | Columbus | 140 |
| Smc Nye Mine Site | Nye | 43 |
| Chs Great Falls Feed | Great Falls | 0 |
← All Copper compounds releases nationwide · Montana pollution overview