Ann: First Quarter 2017 Preliminary Results & Reporting Calendar, page-78

Hi Paul.
You will need to deducted the added costs of the plant maintenance over the 10-11 days from C1 over 4 qtrly not just 1 qtr as this is a PA cost. Also you will find the Av Cu spot across the qtr will be above $2.55. Our forward sales are at $2.60 with Av spot @ $2.65 for the qtr.

So EBITA of $6.4ml + 11% down time= $7.1ml
If productions sits at a constant of 14400t cu (which it won't) that's overall EBITA of $28.416ml pa
Hence allowing Cu spot to stay around $2.60lb constant and 1 maintenance schedule costs pa ($0.7ml) at AN;
*14400t cu pa for EBITA $27.716ml revenue $104ml (from preliminaries)
*16000t cu pa for EBITA $30.873ml revenue $115.5ml
*18000t cu pa for EBITA $34.82 ml revenue $130ml
*24000t cu pa for EBITA $46.66 ml revenue $173.3ml
....and most Cu heads are predicting Cu spot to touch $3 in the not to distant future and Kalenn did enlighten us on the increase % in earnings @ $3lb, a whopping 60-80% increase.
Lucky to accumulate @ 10.5 & 11cts.
Cheers and have a good weekend...."Lest We Forget"