Ann: Preliminary Final Report, page-5

If you tke out the financing costs, revenue even at these deflated prices was greater than sales cash cost. That is a great sign.
It simply means we need is the Cu price to rise a bit, and if we can get up to $3lb this year, all should be rosy.
Note that the Cu price is very close to breaking ut of it's current range.
It's probably the best shape and best outlook TGS has had in years, considering not just long ago we were teetering on colapse.