Environmental Assessment Completed

Mineral Material Area Expansion and Contract Reissuance at Antelope Mine

Medicine Bow-Routt National Forests & Thunder Basin National Grassland Converse, Wyoming Douglas and Thunder Basin Ranger District

Authorization for reissuance of a 5-year term mineral material sale contract at Antelope Mine, including additional areas to the current authorized area.

Location

Near Antelope Mine approximately 50 miles north of Douglas WY, along Antelope Coal Mine Road (County Road 37).

Project timeline

1
Scoping Start
07/24/2025
2
Comment Period
07/24/2025
3
Decision
12/2025 (Estimated)
4
Implementation
01/2026 (Estimated)

NEPA / regulatory detail

Special AuthorityNot Applicable / Other
Notice and Comment Regulation218 (2013) Non-HFRA
Project ActivityMinerals Or Geology Plans Of Operations
Mineral Material Area Expansion and Contract Reissuance at Antelope MineDecision Signed Date: 12/23/2025
ForestsMedicine Bow-Routt National Forest
DistrictsDouglas and Thunder Basin Ranger District
Legal Land DescriptionSection 6 T40N R70W. Sections 1 and 12 T40N R71W.
Minerals and geology