GreenMet $150m rare earth hub in West Virginia: flowsheet and feedstock notes for engineers
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
GreenMet is launching a $150 million critical minerals processing hub in Rupert, West Virginia, designed as a hub-and-spoke network with Greenbrier County as the central plant handling coal tailings from across the state. Partners Flash Metals USA, AmForge Corporation and Greenbrier Smokeless Coal Company plan to recover rare earth elements from “mid-vol” coking coal tailings and feedstock secured via offtake agreements from Greenland, the Woodstock manganese project in New Brunswick and Cameroon. The privately financed project, coordinated with the White House, has attracted a further $10 billion in capital commitments and is expected to create about 250 jobs.
Technical Brief
- Processing flowsheet targets rare earth recovery from “mid-vol” coking coal tailings, not primary ore.
- GreenMet positions Rupert hub as domestic alternative to foreign rare earth supply chains for defence and energy.
- Flash Metals USA and AmForge Corporation provide processing and complex project delivery capability into the consortium.
- Greenbrier Smokeless Coal Company contributes access to one of the US’s largest “mid-vol” coking coal reserves.
- Hub will also treat imported concentrates under offtake from Greenland, New Brunswick’s Woodstock manganese project and Cameroon.
- Entire $150 million capex is privately financed, with no state subsidies or tax incentives.
- Additional $10 billion in private capital is earmarked for downstream processing plants, mines and strategic mineral assets linked to the hub.
Our Take
Locating a rare earth and critical minerals facility in coal-focused Greenbrier County, West Virginia, aligns with other ‘Sustainability’ tagged items where legacy coal regions are being repurposed for energy-transition minerals, which can ease permitting and workforce issues but may raise expectations for local economic diversification outcomes.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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