They're working on it. Invested in an Australian tungsten miner late last year. Has an operating profitable mine in Spain and active Government support to restart the large Mt Carbine mine in Queensland. Antimony is another critical mineral. A number of smallcap Antimony/Tungsten miners are exploring potential deposits in Idaho and Tennessee and Australia, but timelines are long.
That's cool - I'd imagine 'invested in a mining concern' is rare on the spectrum of HNers' resumes. May I ask how did you come to be confident enough to risk capital on something that's not typically within the average tech person's familiarity space? Asking b/c I would like to be able to develop such confidence if I could credibly (even just to myself) do so.
And I get your lack of confidence, I did miss some quick opportunities that I felt were there but I wasn't confident at the time.
The only way to really gain confidence is do your research; read the presentations of each company, particularly their JORC-compliant estimates, time frames to production, how far along the funding path they are, etc.
Use your preferred LLM for deep dives. Whatever you're question, just ask and you'll be surprised at what you learn. For example asking for a cost/effort comparison of the metallurgic processes required for each type of rare earth host material really helped me understand what they were doing, and how each company differed in their approach.
If you like learning random things on Hacker News, deep diving into any technology or industry will not be an issue.