Loser I think you're a little of the mark with your calcs.
The announcement states revenue from Phonsavan project as being between $US200- 300 million.
My calcs are below:
Gold: 20,000ozpa x $1,500 = $30M Copper: 25,000tpa x $8,317 = $207,925,000M
Estimated Total revenue from Phonsavan project: $237,925,000
Note I've used the LME Asian benchmark Copper price (17 September) for Copper as at I believe Copper supplies will continue to be constrained moving forward, putting upward pressure on the Copper price (until at least 2020). For this reason I see the current price of Copper as being relatively conservative.
PNA Price at posting:
$3.16 Sentiment: Buy Disclosure: Held