Tintina Resources Inc. (TSXV:TAU,OTCQX:TINTF)  announced that they have filed an updated National Instrument 43-101 compliant  technical report and PEA for their Black Butte Copper project.

As quoted in the press release:

PEA HIGHLIGHTS
Initial estimated startup capital of $217.8 million including a 22% contingency of $33.3 million. Estimated sustaining capital is $114.7 million over an 11 year mine life
Base case using long-term copper price of $3.05 / pound (lb)*
Pre-tax NPV of $218 million at an 8% discount rate with an IRR of 30.5% and 3.6 year payback
Post-tax NPV of $110 million at an 8% discount rate with an IRR of 20.2% and 4.7 year payback**
Underground mining operation with 11-year mine life at a nominal processing rate of 3,300 tonnes (t) per day using a conventional flotation circuit producing a single copper concentrate

To view the whole press release, click here.