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American Rare Earths unveils larger Cowboy state mine development plan in updated scoping study

American Rare Earths CEO Mark Wall joined Steve Darling from Proactive to discuss an updated Scoping Study for the Cowboy State Mine (CSM), outlining a larger development concept for Halleck Creek and the company's plans to advance a potential domestic source of rare earth materials in the United States.

The updated study evaluates a 4.5-million-tonne-per-year operation with a projected mine life of 26 years. The development case generates an estimated after-tax net present value of approximately US$1.07 billion, based on an 8% real discount rate, with initial capital estimated at approximately US$900 million, including contingency.

Wall explained that American Rare Earths is looking beyond simply developing the scale of the Halleck Creek mineral resource. The company's broader objective is to establish a domestic supply of rare earth oxides and advance the technical work required to connect those materials with downstream U.S. production of rare earth metals and permanent magnets.

The updated Cowboy State Mine development case represents a larger starting point for that strategy. Modelled average annual production of neodymium-praseodymium (NdPr) oxide has increased from approximately 1,800 tonnes to 2,500 tonnes, while the projected mine life has increased from 20 years to 26 years.

The development concept combines mining, comminution and mineral concentration at the Cowboy State Mine with a separate hydrometallurgical refinery planned for the Wheatland or Laramie area of Wyoming. This configuration is intended to provide a pathway from the extraction and concentration of rare earth-bearing material through to the production of rare earth oxides.

Initial capital expenditure is estimated at approximately US$900 million, consisting of roughly US$690 million in direct capital and US$210 million in contingency. The updated study applies a 30% contingency allowance to direct capital, compared with 20% in the company's 2025 study.

A separate closure cost provision of approximately US$56 million has also been included at the end of the projected mine life.

The expanded production profile, longer modelled mine life and planned downstream refining component provide the framework for American Rare Earths to continue advancing Halleck Creek while assessing the infrastructure, financing, permitting and technical requirements needed for potential future development.

#proactiveinvestors #americanrareearthslimited #asx #arr #otcqx #arrnf #adr #amrry #wyomingrareinc #HalleckCreek #RareEarths #CriticalMinerals #NASDAQ #HalleckCreek #DefenseSupplyChain #EnergyTransition #Mining #Wyoming #MiningNews #NovexLLC #PermanentMagnets #CriticalMinerals #USMining #WyomingMining #SupplyChain #MiningNews #CleanEnergy #MagnetTechnology

00:01 Mark Wall

There is a high chance that what we'll do because that work is very well advanced, is we may put out a PFS relatively soon and bring together some of that work.

00:15 Steve

Welcome back inside our Proactive News room and joining me now is Mark Wall. He is the CEO of American Rare Earths. So Mark, it's great to see you again. How are you?

00:25 Mark Wall

Yeah, fantastic, Steve, you?

00:27 Steve

Yeah, I'm doing well, doing well. Excited to learn a bit more about your most recent news and it was significant because you've unveiled in essence a larger Cowboy state mind development plan. So a a new scoping study that really talks about where you are but really where you can get to and I think that's the key here.

00:46 Mark Wall

That's right, Steve, and I think you've said something really key there. I mean, this is a continuum. This is uh we we all think about studies with a name in the front, whatever, a PFS, an FS, an IA. It's a continuum. We're we're about building a project here.

01:08 Mark Wall

So we were doing really interesting and good work, progressing what we were calling a PFS, then of course, the Nasdaq uh process come along, that led us to go down the path of producing an SEC compliant study, which was called an IA, an initial assessment, and then that led us that work was really heavily informed by the PFS work, although there were some things we hadn't quite finished,

01:45 Mark Wall

but you know, you're never in charge of the time. So, that led us to inform everyone and and produce a Jorc document. And it it's a this deposit as you know, Steve, we've just we've talked about this a lot of times. It's optionity is huge because of the size of the deposit. So, we've we've looked at that optionity, we've come up with a larger footprint, we understand uh everything more than we did previously,

02:26 Mark Wall

and and this is a pretty exciting study. It really shows the optionity of this project.

02:32 Steve

So it gives you an an an estimate of four and a half million tons per year operation, a mine life of about 26 years. I mean it really significantly adds more to what you have. And obviously with that comes a an an added upfront cost as well, but you've sort of worked that into here and how you're going to deal with it.

02:51 Mark Wall

Well, we have Steve and and again, you've raised a super good point. There's a couple of things we've done here though. One, we've in included a fair chunk of closure uh funds, which wasn't included in any of the thinking before. That's the reality of mining. And we've also been pretty conservative around the capital number. I mean, the contingency went from 75 million to 208 million.

03:26 Mark Wall

So that that's really us looking through the lens of we're going to build this. Let's let's as we sharpen up the capital, as we sharpen up the design, we can bring down that contingency. It provides an opportunity, but we've we've beef that up a lot.

03:45 Steve

Yeah. Mark, you talked about a continuum and that's where this document sits now in today, but having more work that you're doing and more things that you need to do, you you change that document as it continues to develop along. So what's sort of the next stages here? Uh what will you be looking for now over the next, you know, six months to a year?

04:10 Mark Wall

Right, great question, Steve. I mean we we parked what we were calling, excuse me, what we were calling the PFS and we dragged that forward into this SEC study and then the juke study. And but there's three streams of work for example, we're doing around recoveries. And in a in a perfect world, we would have let that work play out, but we didn't really have the opportunity to do that. So we'll continue that work.

04:49 Mark Wall

There is a high chance what we'll do, because that work is very well advanced, is we may put out a PFS relatively soon and bring together some of that work that that is very much a work in progress. And we're really aiming though, all all of that doesn't really matter. What matters is a feasibility study that drives project financing, and we're aiming for that at the end of 27. And that's the very reason that we've already done the drilling associated with the reserve conversion

05:32 Mark Wall

for the feasibility study is done. Now, I know you spoke with Andrew a short while ago regarding that drilling and some really interesting results. We're very pleased with how that drilling proved out, but what we've essentially done here is is we've completed the drilling for the feasibility study already. So I think Steve, everyone gets very hung up on the num the names and the acronyms and we're building a project.

06:06 Mark Wall

In order to do that, we want to get the design right, we want to get the reserve conversion done, we want to get the metallurgy right and all that work's happening at full force. and unfortunately, it all comes out under different acronyms of names along the way.

06:23 Steve

Yeah. In the end, it's trying to get to a point and and there's has to be steps along the way. I think everyone kind of understands that part of it for sure Mark. So, um, congratulations on this. It's it's exciting and I know that there's lots more to come in the next little while. We'll look forward to having you back to discuss it all, okay?

06:40 Mark Wall

Well, there's lots more to come, Steve. Don't you worry. We are uh we are moving at break neck speed.

06:49 Steve

All right, we look forward to the next conversation. That's Mark Wall. He's the CEO of American Rare Earths.

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