SSMC East Boulder Mine proposes expanding the existing TSF an additional 14 ft. elevation using the same construction and operation methods as approved in stages 1 to 5. Final crest elevation is designed at 6,344 feet.
Location
East Boulder Mine (EBM), Sweet Grass County, approx.. 16 miles south of McCloud, MT in the East Boulder drainage. Access is by State Route #298 and Forest Service Road #205.
Project timeline
1
Scoping Start
11/08/2018
2
Comment Period
05/15/2020
3
Objection Period Start
09/11/2020
4
Decision
11/2020 (Estimated)
5
Implementation
11/2020 (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 |
| Sibanye Stillwater Mining Company's East Boulder Mine Stage 6 Tailings Storage Facility Amendment | Decision Signed Date: 11/02/2020 |
| Forests | Custer Gallatin National Forest |
| Districts | Yellowstone Ranger District |
| Legal Land Description | Township 4 South, Range 13 East, Sections 2 and 11, Principal Meridian. |