Randall W. Atkins has been active in mineral exploration, trading for some decades behind Ramaco Resources: https://www.marketscreener.com/business-leaders/Randall-Atki...
Ramaco has numerous prospects, one of them paid out when testing and proving: https://ramacoresources.com/critical-minerals-rees/
Various outlets have reported the basics, eg: https://www.businesswire.com/news/home/20230503005966/en/
and: https://www.mining-technology.com/news/ramaco-operations-bro...
and, for those that like the inside gritty details, there's a completed Technical Report: https://ramacoresources.com/wp-content/uploads/2023/05/Weir-... 78 pages from May 2023 (Ten minutes reading ... if you read a bunch of these things).
This is not an Economic Feasibility Study (which comes laterr) - it's a report on exploration results with estimates of amount and type of stuff in the ground.
An EF Study will go on from there and determine cost of extraction against market prices and projections and estimate processing costs via various means (third party or capital investment in processing plant).
These are useful resources for electrification and a renewable future .. the amount of waste by product with REE processing is pretty high and generally skated over .. it's everything you get from Coal Mining ("Do you know how much radaition from coal .. etc") and a whole bunch more.