Washington promised Nairobi it backs local processing. Five days earlier it offered $750 million to a Louisiana separation plant
A senior State Department official rejected the extract-and-ship model in Kenya on September 9. On September 4, EXIM signalled up to $750 million toward a Port of Vinton facility built to separate South American rare earths. The DFC's entire committed African rare earth book is $62.8 million.
Two American commitments, five days apart. One rhetorical, delivered in Nairobi, promising that minerals get processed where they are mined. One financial, delivered to a Toronto-listed miner, moving South American rare earth material to a plant on the Louisiana Gulf Coast. Both are US policy. Only one has a balance sheet behind it.
What’s happening
- Frank Garcia, assistant secretary of state for Africa, told the American Chamber of Commerce in Kenya on Wednesday September 9 that the United States will help Kenya build a critical minerals processing industry. “Critical minerals are a top priority for President (Donald) Trump and Secretary (of State Marco) Rubio, and we are ready to work with Kenya as it becomes a regional leader in this space” [Reuters via MINING.COM, September 9, 2026].
- Garcia framed processing location as the American differentiator. “Some of our competitors are efficient at one thing: pulling minerals out of the ground, whisking them offshore and capturing all value addition far away from the lands from which the minerals originated.” He named no country. Reuters noted China has faced such criticism and has rejected the accusations [Reuters via MINING.COM, September 9, 2026].
- The asset is Mrima Hill, expected to contain tens of billions of dollars of rare earth minerals and niobium. Kenya has not published a shortlist. Harry Kimtai, principal secretary at Kenya’s state department of mining, said six companies are on it, two of them American. Critical Metals Corp and Australia’s RareX said in July they had been shortlisted [Reuters via MINING.COM, September 9, 2026].
- Five days earlier, on Friday September 4, Aclara Resources disclosed a US Export-Import Bank letter of interest indicating up to $750 million toward Project Dynamo, a rare earth separation, metals and alloys facility at the Port of Vinton, Louisiana. It is designed to process material from Aclara’s South American assets into individual oxides including neodymium-praseodymium, dysprosium and terbium. Aclara names AI infrastructure among the industries its mine-to-alloy chain is meant to serve [Reuters via MINING.COM, September 4, 2026].
- The comparison that matters: the US International Development Finance Corporation has committed $62.8 million in total to rare earth projects across Malawi, Angola, Madagascar and South Africa, roughly $50 million of it to Phalaborwa in South Africa. None has reached production. “We do not see private capital coming in,” a DFC executive told Reuters [Reuters via MINING.COM, August 19, 2026].
The two sentences do not fit together
Put the Nairobi speech next to the Louisiana letter and the contradiction is not subtle. The stated American model is value addition in the producing country. The financed American model, in the largest rare earth processing commitment this desk found in the same fortnight, moves South American feedstock to the Louisiana Gulf Coast and separates it there.
Desk arithmetic, and treat it carefully because the two figures are different instruments: the single Louisiana letter of interest is close to twelve times the DFC’s entire committed African rare earth portfolio. EXIM’s $750 million is explicitly not a final financing commitment and is subject to approvals. The DFC’s $62.8 million is committed money. The honest reading is that even Washington’s non-binding domestic number dwarfs its binding African one, and that is the number Kenyan negotiators should put on the table.
Brazil angle
Brasília has been making the Kenyan argument, and now has company. Brazil’s position is that reserves alone are a poor bargain and that access should be conditioned on domestic processing. The awkward fact, resting on this desk’s own prior reporting rather than on anything in the EXIM disclosure, is that Aclara’s Carina feasibility study books a separation fee payable to the unbuilt Vinton plant, structured so a large share of gross revenue leaves the producing country [Tantalum Strategy Desk, September 6, 2026]. The Reuters disclosure itself says only “South American assets.” That fee is the mechanism Garcia described in Nairobi as a competitor’s practice, and the mechanism a US export credit agency has offered to finance.
Kenya is not a competitor to Brazil for tonnes. It is a competitor for the same American agency balance sheets, and it is being offered the value-addition language Brazil has struggled to get written into anything binding. What Nairobi gives Brasília is a senior US official on the record saying the extractive model is not the American preference. That is quotable in the next round.
US angle
Read the week whole and the direction is consistent even where the rhetoric is not. On September 9 the Department of Energy’s Office of Critical Minerals and Energy Innovation selected four projects for $73 million through its Mine of the Future initiative, all four domestic testbeds [US Department of Energy, September 9, 2026]. Testbeds in Arizona and Missouri, separation at Vinton, feedstock from South America and Africa. The midstream is being built in the United States. The speeches about where the midstream should sit are delivered abroad.
China angle
The pressure that makes all of this urgent got sharper in the same week. China exported 4,735 tonnes of rare earths in August, up 12.1 percent from July’s 4,224 tonnes but 18.2 percent below the 5,792 tonnes shipped in August 2025. Exports for the first eight months totalled 39,441 tonnes, down 11.1 percent year on year, deepening from a 10 percent annual fall through July. The dollar value of those exports over January to August rose 53.5 percent [Reuters via MINING.COM, September 8, 2026].
Fewer tonnes, substantially more revenue. That is what pricing power looks like when you own the separation step, and it is the clearest evidence that where separation sits is worth more than where the rock sits. Reuters also reported some Chinese suppliers are declining to ship to the US for fear of repercussions from Beijing, weeks before a Xi Jinping visit to Washington.
What it means
Separation, not mining, is where the margin and the chokepoint live. Every party here knows it, which is why Kenya wants the plant, why Aclara is building one in Louisiana, and why Chinese export revenue climbs while volumes fall. The US now holds two positions on where that step belongs, and only the domestic one is funded. Producing countries should price the gap between the speech and the term sheet.
The Tantalum AI Materials Index stood at 107.5 in its most recent weekly reading, materials sub-index at 106.2, as of the September 5 update.
What to watch
- A published Mrima Hill shortlist. Kimtai says six names exist and two are American. Kenya has published nothing. A public list, and whether any bid commits to onshore separation rather than concentrate export, is the first real test of the Nairobi language.
- Whether the EXIM letter converts. A letter of interest under the Make More in America initiative is not a commitment. Aclara says the Vinton facility should be construction-ready by the end of 2026. Watch for a definitive EXIM approval, or its absence, against that date.
- September 20, China’s fuller customs breakdown. Reuters reports the detailed data including rare earth magnet exports lands that day. Magnet volumes, not oxide volumes, are the number that maps to AI infrastructure demand.
