Oct 20 (Reuters) - South32 Ltd S32.AX
* qtrly alumina production 1,293 kt versus 1,296 kt in prior quarter
* qtrly payable nickel production 8.7 kt versus 9.6 kt in prior quarter
* qtrly aluminum production 243 kt versus 238 kt in prior quarter
* production and unit cost guidance remains unchanged for the majority of operations
* illawarra metallurgical coal sales of 9.3mt now expected in fy17 Source text for Eikon: ID:nASX8snXyc Further company coverage: S32.AX