Jan 31 (Reuters) - Iluka Resources Ltd ILU.AX
* Decided to make about "90 roles redundant" after sustainable business review to remove cost from business
* "Reviewed likelihood of developing some of iluka's mineral deposits in australia and united states"
* Review "necessitated write-down of some assets, particularly in Murray Basin"
* Review resulted in 27 % reduction to current estimates of ore reserves, from 23.0 million tonnes of heavy mineral as at 31 dec 2015 to 16.7 million tonnes
* 2016 net profit after tax is estimated to be between loss of $220 million to loss of $230 million Source text for Eikon: ID:nASX84zgy9 Further company coverage: ILU.AX