Correct me if I am wrong,
Assuming gold price stays at US$1900 per OZ
FFX will be making BIG profit : $1900-$1000(AISC)= US$900 x 250,000 OZ=US$225,000,000 = AU$316,901,408 ( let's around it down to *****AU$310 million per year********).
Please don't forget FFX will still holds 20% of LLL.
In conclusion,I am holding my FFX shares after the demerger.