The Stillwater Mine Plan of Operations amendment proposes to continue production of platinum group metals via underground mining operations for an additional 36-42 years through the expansion of existing surface infrastructure and construction.
Location
The project is located within the Stillwater River drainage near Nye, Montana, involving both private and National Forest System lands.
Project timeline
1
NOI in Federal Register
06/2026 (Estimated)
2
DEIS NOA in Federal Register
06/2027 (Estimated)
3
FEIS NOA in Federal Register
04/2028 (Estimated)
4
Objection Period Start
01/2028 (Estimated)
5
Decision
04/2028 (Estimated)
6
Implementation
06/2028 (Estimated)
NEPA / regulatory detail
| Special Authority | Not Applicable / Other |
| Notice and Comment Regulation | 218 (2013) Non-HFRA |
| Project Activity | Minerals Or Geology Plans Of Operations |
| Forests | Custer Gallatin National Forest |
| Districts | Beartooth Ranger District |
| Legal Land Description | Not Applicable |