Excelsior Mining Corp (EXMGF)

[rubberworm]

https://www.investorsobserver.com/news/qm-pr/8388535849550375


Gunnison (16.5% copper stream): Subsequent to quarter-end, Excelsior Mining Corp. (“Excelsior”) announced that it entered into a collaboration agreement with Nuton LLC, a Rio Tinto venture, to evaluate the use of its Nuton™ copper heap leaching technologies at Excelsior’s Johnson Camp mine in Cochise County, Arizona. The Nuton technologies, developed by Rio Tinto, are an extensive portfolio of advanced copper heap leaching technologies targeted at primary sulfide minerals (including lower grade minerals), which could not otherwise be processed using traditional leaching or sulfide processing technologies. These technologies offer the potential to produce additional copper in a cost-effective manner that has significant environmental benefits and reduces waste from new and ongoing operations.