Rare Earth Directory

Wyoming ยท state page

Rare earth mines, projects and companies in Wyoming

Wyoming has 3 tracked rare earth mines and projects: Brook Mine, Halleck Creek and Bear Lodge. None is producing rare earths yet: 3 in development. It also has 2 tracked rare earth plants and mills: Upton demonstration plant (operating) and Rawhide pilot processing facility (planned).

Wyoming holds the largest known US rare earth deposit by contained oxide, Halleck Creek (about 8.7 Mt of TREO, OSTI review), and Bear Lodge, a high-grade deposit at 3.05% TREO.

Verified through Oct 1, 2026

See the sites Open on the map
Brook Mine: Development Brook Mine Halleck Creek: Development Halleck Creek Bear Lodge: Development Bear Lodge Upton: Processing / manufacturing (operating) Upton Gillette: Processing / manufacturing (planned) Gillette
Pins mark an area or a city, not a surveyed point. Circles are mines and projects, squares are plants and mills.
Sites on the map
5Mines, projects, mills and plants
Mines and projects
3
Plants and mills
2
Companies and pilots
4Tracked in the state

Which rare earth mines and plants are in Wyoming?

5 sites are tracked in Wyoming: 1 operating, 3 in development and 1 planned. The table gives the owner and the next step for each.

Tracked rare earth mines, projects, mills and plants in Wyoming, by status
SiteLayerStatusOwner or operatorNext step or status note
Upton demonstration plantUpton, WyomingDemonstration plantsPlant operatingRare Element ResourcesDemonstration plant started Mar 24, 2026; delays reported Jun 2026
Bear LodgeCrook County (near Sundance; Black Hills National Forest), WyomingMines and projectsDevelopmentRare Element ResourcesFederal permitting scheduled to finish Mar 2028 (FAST-41)
Brook MineSheridan County (near Ranchester), WyomingMines and projectsDevelopmentRamaco ResourcesInterim revised economics by end of 2026; pre-feasibility study in 2027; first production targeted 2031
Halleck CreekAlbany County (northeastern; central Laramie Mountains), WyomingMines and projectsDevelopmentAmerican Rare EarthsPre-feasibility study targeted Q3 2026; permit-to-mine filing late 2026
Rawhide pilot processing facilityGillette, WyomingDemonstration plantsPlant plannedPeabodyPlanned pilot at the Rawhide coal mine for a mixed rare earth concentrate; no capacity or date published; DOE selected it for award negotiation in Jul 2026 Status is company-reported.

Mines and projects link to their own profile. Plants link to the profile of the company that operates them. See the map page for how precise each pin is.

Verified Oct 1, 2026

What permits do rare earth projects in Wyoming need?

Each project has its own approvals. The summaries for Brook Mine, Halleck Creek and Bear Lodge come from the permits section of each profile, where the sources are listed.

  • Brook Mine Development

    Wyoming approved Brook Mine's coal permit in Jul 2020 with 12 conditions and renewed it in 2025, and it covers about one-third of the acreage. Ramaco also faces a securities class action over its Brook Mine disclosures and has sued a former executive over trade secrets.

    Read the permits and community section on the Brook Mine profile

  • Halleck Creek Development

    The Cowboy State Mine needs a permit to mine from the Wyoming Department of Environmental Quality, which American Rare Earths plans to file in late 2026. Baseline work is advanced, with groundwater monitoring wells installed and 12 months of data collected from May 2025.

    Read the permits and community section on the Halleck Creek profile

  • Bear Lodge Development

    Bear Lodge needs a Forest Service approval of its mine plan of operations under an environmental impact statement. The agency began the review on Jul 29, 2026, and a public scoping period ran to Aug 28, 2026. Residents have raised water, wildlife and recreation concerns.

    FAST-41 transparency project (Mar 20, 2026). FAST-41 is the federal permitting program that sets target dates for each review step and tracks them on a public dashboard.

    Read the permits and community section on the Bear Lodge profile

Which rare earth companies are based or building in Wyoming?

American Rare Earths (Halleck Creek), Rare Element Resources (Bear Lodge and Upton demonstration plant), Ramaco Resources (Brook Mine) and Peabody (Rawhide pilot processing facility) are tracked in Wyoming.

Rare earth companies, pilots and institutions tracked in Wyoming
CompanyWhy it is in WyomingRoleListingGovernment support
American Rare EarthsHalleck CreekDeveloperASX: ARR (US OTC listing)None recorded
Rare Element ResourcesBear Lodge; Upton demonstration plantDeveloperOTCQB: REEMFFAST-41 permitting coverage (Mar 2026)
Ramaco ResourcesBrook MineCoal producer with rare earth developmentNasdaq: METCWyoming $6.1M grant for the processing plant (state)
PeabodyRawhide pilot processing facilityPeabody's Wyoming Rare Earths Project in the Powder River Basin (Rawhide mine) was selected by the Department of Energy on Jul 1, 2026 to negotiate an award. The Wyoming Energy Authority granted $6.25M in matching funds toward a pilot facility, which Peabody reported as awarded in Feb 2026.Coal miner piloting rare earth recoveryNYSE: BTUDOE coal-waste pilot (selected for award negotiation, Jul 2026)

A company with several sites appears on each state page where it has one. Companies without a link have no profile yet. Government support is the company-wide summary and is not allocated to a state.

What happens next with rare earths in Wyoming?

2 dated milestones are on the directory's calendar for Wyoming. The next step for each project is in the table above.

Dated milestones

What government support is going to rare earth companies in Wyoming?

State and local bodies in Wyoming have 3 tracked incentives for rare earth companies. One federal support item is tracked for companies with a site or headquarters here, each with a status.

State and local incentives for rare earth companies in Wyoming (not federal)
CompanyBodyInstrumentAmountStatus
Ramaco ResourcesState of WyomingGrant for the Brook Mine processing plant2025. State, not federal, funding.$6.1MClosed
PeabodyWyoming Energy AuthorityEnergy matching funds for a pilot processing facility at Rawhide mineFeb 2026. Peabody told investors in Feb 2026 that it had recently been awarded the matching funds; part of $11.7M in state grants.$6.25MClosed
Rare Element ResourcesWyoming Energy AuthorityGrant for the Upton demonstration plant2022. State, not federal, funding.$4.4MClosed

State and local items are listed apart from federal support and are never added to its totals. An authorization is not an award.

Federal support tracked for companies with a site or headquarters in Wyoming
CompanyAgencyInstrumentAmountStatus
Rare Element ResourcesDepartment of EnergyFunding for the Upton demonstration plantDate not stated$24.2MClosed

These amounts attach to companies, not to sites in this state: many of the companies have projects elsewhere. Do not add them up as spending in the state. The government support tracker has the terms and sources.

Which neighboring states have rare earth projects?

Colorado, Montana, Utah, Nebraska and Idaho border Wyoming and have tracked rare earth sites, companies or pilots.

All states: rare earth mines, projects and companies by US state.

Questions about rare earth in Wyoming

Does Wyoming have rare earth mines?

Wyoming has 3 tracked rare earth mines and projects: Brook Mine (in development), Halleck Creek (in development) and Bear Lodge (in development). None produces rare earths today, and the only active primary rare earth mine in the United States is Mountain Pass in California.

Which rare earth companies are based or building in Wyoming?

American Rare Earths (Halleck Creek), Rare Element Resources (Bear Lodge and Upton demonstration plant), Ramaco Resources (Brook Mine) and Peabody (Rawhide pilot processing facility) are tracked in Wyoming.

Are any rare earth plants operating in Wyoming?

Upton demonstration plant is operating. The others are Rawhide pilot processing facility (planned).

What is the largest rare earth deposit in Wyoming?

By contained rare earth oxide, Halleck Creek is the largest tracked deposit in Wyoming: JORC 2.63 billion tonnes at 3,292 ppm TREO; about 8.7 Mt TREO (OSTI review, 2026).

Has Wyoming or a local government supported rare earth projects?

Yes: $6.1M for Ramaco Resources (grant for the Brook Mine processing plant, awarded), $6.25M for Peabody (energy matching funds for a pilot processing facility at Rawhide mine, awarded) and $4.4M for Rare Element Resources (grant for the Upton demonstration plant, awarded). State and local items are tracked apart from federal support and are not added to its totals.

Sources and verification

Each profile lists its sources, a confidence grade and a verification date. Order of authority: official records (SEC filings, agency documents), company documents and technical reports, research papers, then independent press. Syndicated copies and reference works are labeled and are never the only source for a number. Company-reported figures are labeled as such, and non-binding deals are labeled "letter of intent" or "conditional".

Tags show what kind of source each link is. How sources are ranked