New Hampshire ยท state page
Rare earth mines, projects and companies in New Hampshire
New Hampshire has 1 tracked rare earth plant or mill: Exeter metal refinery (operating).
Phoenix Tailings refines rare earth metals at its Exeter plant, with an initial capacity of 200 t/yr (company-reported).
Verified through Oct 1, 2026
- Sites on the map
- 1Mines, projects, mills and plants
- Mines and projects
- 0
- Plants and mills
- 1
- Companies and pilots
- 1Tracked in the state
Which rare earth mines and plants are in New Hampshire?
Exeter metal refinery is the only site tracked in New Hampshire, and it is operating. The table gives the owner and the next step for each.
| Site | Layer | Status | Owner or operator | Next step or status note |
|---|---|---|---|---|
| Exeter metal refineryExeter, New Hampshire | Metal and alloy | Plant operating | Phoenix Tailings | 500 t/yr capacity, initial 200 t/yr (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
Which rare earth companies are based or building in New Hampshire?
Phoenix Tailings (Exeter metal refinery) is tracked in New Hampshire.
| Company | Why it is in New Hampshire | Role | Listing | Government support |
|---|---|---|---|---|
| Phoenix Tailings | Exeter metal refinery | Metal refiner (private) | Private | Office of Strategic Capital $500M loan (conditional, Jun 2026); DOE selection for about $66M (Jun 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 government support is going to rare earth companies in New Hampshire?
No state or local incentive is tracked for New Hampshire. 2 federal support items are tracked for companies with a site or headquarters here, each with a status.
| Company | Agency | Instrument | Amount | Status |
|---|---|---|---|---|
| Phoenix Tailings | Office of Strategic Capital (Department of War) | Long-term loan commitmentJun 16, 2026 | $500M | Conditional |
| Phoenix Tailings | Department of Energy | Selected for award negotiation (Rare Earth Demonstration Facility Program)Jun 2, 2026 | About $66M | Announced |
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.
Questions about rare earth in New Hampshire
Does New Hampshire have rare earth mines?
No. New Hampshire has no tracked rare earth mine or project. 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 New Hampshire?
Phoenix Tailings (Exeter metal refinery) is tracked in New Hampshire.
Are any rare earth plants operating in New Hampshire?
Exeter metal refinery is operating.
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".
- Department of War: Office of Strategic Capital signs a $500M conditional loan commitment with Phoenix Tailings (Jun 2026) Official record
- Phoenix Tailings: about $1B initiative to rebuild the US rare earth industrial base (GlobeNewswire, Jun 16, 2026) Company document
- OSTI review, Minerals Engineering 249 (Kashyap et al., 2026) Research paper
- USGS Mineral Commodity Summaries 2026 Official record
Tags show what kind of source each link is. How sources are ranked