the cold hard facts, page-11

Good pick up on the stockpiled ore inventory change.
Its hard to work out what their long term operating costs are at the moment just by looking at monthly OPEX because their strip ratio is probably higher currently than later in the mine life when it will drop down to around 6.5:1 from memory.
I was using a figure around $2.00 a pound of Cu in C1 OPEX costs and somewhere around $3.30 for their Net Smelter Cu price from memory some where around 0.77% Cu on the ROM pad (they are having a problem reconciling grade so I dropped the grade from JORC to account for dilution) and a recovery around 90% on 2.4Mtpa. Worked out was around 16.6 Ktpa Cu for $113M including Au and Ag credits of $10M
less C1 costs of $73.7M and on 10 years mining a taxed NPV of $129M or around 10c cents a share fully diluted after placement with no deduction for CAPEX in the NPV calcs but providing for $50M in loans and adding $8M for other costs per annum

At a first glance your Revenue would be similar to my calcs but your per pound Opex must be close to $3.00 a ib