Ann: Press Release Record 2018 NPAT A$184.7 MILLION, page-25

I found this from the annual report.

"At the current annual production rate of 800,000 tonnes per annum, the ore reserve is expected to be depleted by mid-2021." If you look at the ore reserves , out of 6.01 insitu reserves, 1.42 comes from Chugga Far north, 1.27 from Shekuma, 0.60 from Yaka and 1.25 in Tourag. Shekuma is the highest grade out of the lot and stage 6 pit is mined out.

The total material and ore mined in the quarter ended 31 December 2018 was lower than in the quarter ended 30 September 2018 due to the completion of mining in Shekuma Stage 6 pit. In addition, mining was slow in Chugga Far North Stages C and D due to issues with complex faulting and high iron, and in Tourag with the initial de-stacking of the older ramps. The commencement of mining activities at Yaka Stage 4 was delayed pending environmental approval. The remaining ore in Chugga Far North Stage D pit will continue to be mined at a reduced rate. However, this is not anticipated to impact overall ore recovery. The ore in the recently commenced Chugga Far North Stages E and F is expected to be mined in the next quarter with a much lower iron content (an indicator of complex faulting) and should result in higher production rates once pre-stripping is completed.

Mining from Bootu Creek contributes 94.9$ million to OMH. They don't provide any cost guidance on the TRP. Currently they are producing about 800kt/year so it is a big drop down to 250kt/year.