I have been trying to go through the somewhat convoluted and...

I have been trying to go through the somewhat convoluted and unclear results (are these deliberately obscure?) that have been announced. There are frequent changes between amounts of earth mined, minerals produced, costs and profits per lb, per tonne of copper, with gold and silver production mentioned at times! I reserve judgement as to the reason why these reports remain so unclear.
My own summary, possibly quite incorrect btw, is as follows.
Appreciate any corrections! We may have more clarity in early April, when annual report for calendar year 2017 is released, with estimates for the remainder of 2018!! We may not!!
I note Dec Quarterly does NOT summarise for the year, that I could see.

Revenue 2016 $113m. 2017 $126.5m
Copper produced 2016 13,624t. 2017 14,802 (estimate in Sept 14,800 - 15,800t !!)
Gold produced 2016 11,518oz. 2017 6,785
Silver produced 2016 104,000oz 2017 ?
Expenses 2016 $141m?
Impairment cost 2016. $67m
Result 2016 Loss $109m. 2017 H1 Loss $9.6m

For 2018, Revenue
Copper produced 22,000t (22,000-24,000, but on past announcements accuracy this may be lower, or 22,000t)
12,000t @ $8747 =$104.8m
5,000t @$8885. =$40m plus pay off $4m loan. Interest approx $280,000 on the $4m, but reducing monthly and depending upon drawdowns I suppose.
So, another 5,000t remains unhedged, say $8800 =$44m
Gold 3000oz. @say $1670 = $5m
Silver ?
Total income, if all goes well with production, about $193m for 2018. With copper mostly hedged. Doc's figures only !!!!
Maybe, future sale or disposal of Sumba and Bird's Head.

On the other hand, I also note that drilling to further define feasibility and plans for underground mining at nearby Nugent Underground has not even started, only doing tenders now, and drilling "should commence in Q2 2018". I can just imagine that we will be only using one drill rig! Instead of 3-4 rigs on site at Hillgrove, if future potential is there, or otherwise not, but we should be told! Results and decision in 2019? Maybe. And then we will maybe have to start to plan for and then execute upgrades to the processing plant.
Forward planning imo seems pretty slow, and not very far forward looking.
Hopefully forward planning will now improve now funding and income and loan repayments are largely written in, and starting to be paid off. June 2018 for some I note. End of 2018 for the recent $4m.