Curis has a lease on 160 acres of state trust lands which they plan on developing first. They released a new economic feasibility study that concluded:
The base case economics of the project indicate pretax Net Present Value (NPV) of US$748 million with an Internal Rate of Return (IRR) of 38 percent
Life of project direct operating cost is estimated at US$0.79 per pound copper recovered. This is considered to be among the lowest cost copper producers globally.
Royalties paid to Arizona State Land Department over the life of the project will be approximately $162 million.
Operations are planned to occur on land owned by and leased by Curis from the Arizona State Land Department for a total of 13 years. The first nine years of copper production will occur exclusively on state land and is scheduled to begin in 2016. In year 10, production would expand on to private patented land owned by Curis.