Ann: Press Release Record 2018 NPAT A$184.7 MILLION, page-9

I note from the CMSB Financial Report that Qtr4 contribution from their 25% interest in OM Sarawak was down slightly. I'm assuming higher Mn ore prices V lower SiMn and FeMn alloy prices.
However CMSB did report
"Share of results of associates – The Group’s higher share of profit of associates in YE2018 was contributed by all of its operating associates. Collectively, the share of profits jumped by 166% to RM108.12 million in YE2018 from RM40.64 million in YE2017. The main contributor is the strong turnaround at OM Materials (Sarawak) Sdn Bhd."

I also note that CSMB reported.

"The excellent performance in YE2018 was mainly due to gain on sale of RM10.86 million of OM Materials Irredeemable Convertible Preference Shares."