Ramaco Signs Indium Corp Deal for Brook Mine Gallium
Ramaco Resources has agreed to supply gallium and germanium from its Brook mine in Wyoming to Indium Corporation, targeting two metals where US buyers depend heavily on imports.
Ramaco Resources and Indium Corporation have signed a supply agreement covering gallium and germanium from Ramaco’s Brook mine in Wyoming, which the company says holds the largest US unconventional deposit of rare earth elements and critical minerals hosted in coal and carbonaceous ore.
Ramaco Resources (METC) has signed a supply agreement with Indium Corporation covering gallium and germanium produced from its Brook mine in Wyoming, tying a coal-hosted critical minerals project to a specialist materials maker that turns those metals into industrial and electronic products.
The two elements sit at the awkward end of the periodic table for American manufacturers. Neither is mined on its own at meaningful scale anywhere. Both are by-products — gallium usually from bauxite and alumina refining or zinc processing, germanium from zinc residues and, in some cases, from coal ash and coal-derived material. That by-product status is precisely why supply is concentrated in a handful of hands and why a domestic source, if it can be produced at commercial purity and volume, carries strategic weight out of proportion to the tonnage involved.
What Brook Mine Actually Is
Brook is not a conventional hard-rock rare earths project. Ramaco describes the Wyoming deposit as the largest unconventional deposit of rare earth elements and critical minerals in the United States sourced from coal and carbonaceous ore — meaning the target metals are dispersed through coal seams and associated carbon-bearing strata rather than sitting in a discrete mineralised ore body of the type Mountain Pass or Mount Weld represent.
That geology cuts both ways. On the positive side, coal and its combustion and processing residues are already handled at scale, already moved by existing rail and road infrastructure, and already permitted as mining activity in a state with a long coal history. Wyoming knows how to dig this material and how to regulate the digging. On the negative side, unconventional deposits are usually low-grade, and the value sits entirely in the separation and refining flowsheet — the chemistry that pulls parts-per-million quantities of gallium and germanium out of a bulk carbon matrix and gets them to the purity a customer will pay for.
That is what makes the counterparty interesting. An offtake or supply arrangement with a company that consumes and processes these metals is a different signal from a memorandum of understanding with a government agency or a trading house. It implies a buyer with a specification, and a specification implies a target the plant has to hit.
Why Gallium and Germanium Are the Pressure Point
Gallium goes into gallium arsenide and gallium nitride semiconductors — the compound chips behind radar, satellite communications, LED lighting, and increasingly the power electronics in fast chargers and electric drivetrains. Germanium goes into infrared optics used in night vision and thermal imaging, into fibre-optic cable, into solar cells for spacecraft, and into polymerisation catalysts.
Neither market is large in dollar terms. Both are load-bearing. A defence prime cannot substitute its way out of a germanium lens, and a radar manufacturer cannot swap gallium nitride for silicon without redesigning the system. China dominates refined output of both metals and has used export licensing on gallium and germanium as a lever in its trade dispute with Washington, which is the entire commercial logic behind projects like Brook. The buyer base for a domestic supply is not price-sensitive in the way a bulk commodity buyer is; it is availability-sensitive.
The agreement was reported by Mining.com. Volumes, pricing mechanics and the start date for deliveries were not detailed, and those are the terms that will determine whether this is a commercial supply line or a first-of-kind qualification arrangement.
How the Market Took It
Ramaco shares closed at 11.90, up 6.73% on the day, having traded between 11.29 and 11.96 and against a previous close of 11.15, as of the last trade on Friday, 21 August 2026. That is a decisive move on a day when the broad market was firm but unremarkable: the S&P 500 tracker (SPY) closed at $765.72, up 0.41%, the Nasdaq 100 tracker (QQQ) at $713.44, up 0.35%, and the Dow tracker (DIA) at $532.22, up 0.89%.
In other words, the stock moved several times the market. For a company whose core business has historically been metallurgical coal, that is the market pricing optionality on the critical minerals side rather than revising a view on coking coal demand. Investors have been willing to pay up for credible domestic critical minerals exposure across the sector, and a named industrial buyer is the kind of detail that converts a resource story into a supply-chain story.
The Questions That Decide Whether This Works
Three things matter from here, and none of them are resolved by the announcement itself.
- Purity and qualification. Gallium and germanium buyers work to tight specifications. Getting material that a customer will accept into a production process typically takes qualification cycles measured in quarters, not weeks.
- Volume. Without disclosed tonnage, it is impossible to say whether the arrangement displaces a meaningful share of imported units or seeds a pilot line. The distinction is the whole investment case.
- Capital and timing. Separation and refining capacity is the expensive part of any critical minerals project. How Brook’s processing is funded, and when it is commissioned, sets the revenue clock.
Three things matter from here, and none of them are resolved by the announcement itself.
There is also a policy overlay. Washington has been steering money and offtake support toward domestic critical minerals through defence and energy channels, and coal-derived recovery has attracted research funding specifically because the feedstock already exists in enormous volumes at legacy sites. A project that can demonstrate commercial recovery from carbonaceous ore is a template, not just a mine.
What to Watch
Look for the follow-on disclosures: contracted quantities, the term of the agreement, whether pricing is fixed or indexed, and the first delivery date. Watch too for whether additional buyers appear. One customer is a validation; a second and third is a market. And watch how Ramaco reports the segment — the point at which critical minerals show up as a separate revenue line is the point at which the market can value them on something other than narrative.
Key facts
- Ramaco Resources (METC): Closed at 11.90, +6.73%, as of 21 Aug 2026 20:00 GMT
- Counterparty: Indium Corporation
- Asset: Brook mine, Wyoming
- Metals covered: Gallium and germanium
Frequently asked questions
What did Ramaco Resources and Indium Corporation agree to?
The two companies signed a supply deal covering gallium and germanium produced from Ramaco’s Brook mine in Wyoming. Indium Corporation is a materials manufacturer that processes and supplies specialty metals. Volumes, pricing terms and delivery timing were not disclosed in the announcement, so the scale of the arrangement remains unclear.
Where is the Brook mine and what makes it unusual?
Brook is in Wyoming. Ramaco says it holds the largest unconventional deposit of rare earth elements and critical minerals in the United States sourced from coal and carbonaceous ore. Rather than a conventional hard-rock rare earths ore body, the target metals are dispersed through coal seams and associated carbon-bearing rock.
Why are gallium and germanium considered critical minerals?
Gallium is used in compound semiconductors for radar, satellite communications, LEDs and power electronics. Germanium goes into infrared optics for night vision and thermal imaging, fibre-optic cable, space-grade solar cells and catalysts. Both are produced almost entirely as by-products of other metals, and refined supply is heavily concentrated in China.
How did Ramaco stock react?
Ramaco Resources (METC) closed at 11.90, up 6.73% on the day, with a session range of 11.29 to 11.96 against a previous close of 11.15, as of the last trade on 21 August 2026. That significantly outpaced the broad market, where the S&P 500 tracker rose 0.41%.
Does this mean the United States now has domestic gallium supply?
Not yet. A supply agreement establishes a commercial relationship and a customer specification, but material still has to be produced at the required purity and in the required quantity. Qualification of specialty metals for industrial and defence use typically takes multiple cycles, and neither volumes nor a start date were disclosed.
What should investors watch next?
Key disclosures would include contracted tonnage, the length of the agreement, whether pricing is fixed or indexed to a benchmark, and the first delivery date. Additional named buyers would suggest a genuine market rather than a single validation. Separate reporting of critical minerals revenue would let the market value the segment directly.
Sources
Photo: Gaspar Zaldo · Pexels Licence — source
