Excelsior Mining Announces Option Agreement with Nuton, a Rio Tinto Venture
https://finance.yahoo.com/news/excelsior-mining-announces-option-agreement-114500525.html
It's good to read that a division of the world's largest miner continues to sniff around for opportunities in Coshise County. As a reminder, Rio Tinto is the major partner at the Resolution Copper project in Superior, AZ - potentially the world's largest copper mine -which is on trend with Johnson Camp, Tombstone, Hay Mountain, Bisbee, and mines in Mexico.