RE:RMC High Grade Worth $8.28 based on FCX Morenci SaleI found presentation that Brent Cook talks about what he has the value of RMC's high grade at. Overall the presentation is informative and a good listen, the part specific to RMC is from 23:00 - 25:15.
https://www.youtube.com/watch?v=vgWPrq4EQQM&app=desktop
I was just off on my recall of his valuation (August 18, 2015), he had the high grade stuff valued at about $7.50 per share.
We have had more drilling and an agreement with Rio Tinto since then so following with his reasoning the company has continued to become more valuable since then.