Electrified cloth extracts uranium from seawater
newatlas.com
newatlas.com
https://pubs.acs.org/doi/10.1021/acscentsci.3c01291
As best I can tell, the authors don't write that it is specific to uranium; rather, that is the element they chose to study.
But, publishing prevents them from having a monopoly on gold mining.
So they publish using uranium, hoping it will be classified, or that at least some of the details will be classified.