RE:The two main areas for improvement:Agree that any improvedment in recovery is great however 81% is still pretty good. Not sure I quite agree with your comments re: NPV. See below as Arizona Mining released this April 2017 in their PEA. It's 3X. I was a shareholder there until the buyout offer showed up. The AZ payback is quicker but our mine life is longer.
Highlights (in US$)1
- Substantial NPV8% of $1.26 billion
- Robust after-tax IRR of 42%
- Initial capex of $457 million
- Short 1.7 year payback
- Total operating costs of $48/ton
- 19 year mine life based on conservative 60.8 million tons of ore production