Sibanye Stillwater Mining Company's East Boulder Mine Stage 6 Tailings Storage Facility Amendment
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.
Project Summary
Location Summary:
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 Milestones:
| Milestone | Date |
|---|---|
| Scoping Start | 11/08/2018 |
| Comment Period | 05/15/2020 |
| Objection Period Start | 09/11/2020 |
| Decision | 11/2020 (Estimated) |
| Implementation | 11/2020 (Estimated) |
Expected Analysis Type:
Environmental Assessment
Special Authority:
Not Applicable / Other
Lead Management Unit:
Yellowstone Ranger District
Notice and Comment Regulation:
218 (2013) Non-HFRA
Project Purpose:
Minerals And Geology
Project Activity:
Minerals Or Geology Plans Of Operations
Current Status:
Completed
Project Decision Information
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
States:
Montana
Counties:
Sweet Grass
Legal Land Description:
Township 4 South, Range 13 East, Sections 2 and 11, Principal Meridian.
Use the widget below to browse documents associated with this project. Cookies must be enabled to use this tool.
If you are using a mobile device, the setting for "Allow cross-website tracking" must also be enabled to view the documents. You do not need to sign up or login to Box to view documents, but if you have difficulty accessing the documents on a mobile device, you may choose to sign up for a free account, download the app to your device and log in to ensure that you can open the documents.
Alternatively, these documents can be accessed on the Pinyon Public website: View Documents on Pinyon Public
Robert Grosvenor
5242 Highway 89 South
Livingston, MT 59047
406-848-7375 ext.28
rgrosvenor@fs.fed.us
Last Updated: 11/4/2020