Check out EVLLF EnviroLeach Technologies (1.124) They have a non-cyanide leaching solution that appears to be working. If successful, could be huge. They teamed up with NTGSF Golden Predator Mining (.2239) to do a bulk sample test of the solution with positive results. Both companies could be good prospects. https://enviroleach.com/golden-predator-successfully-tests-enviroleach-process-on-sulfide-based-gravity-concentrates/