Dec 5 (Reuters) - South32 Ltd S32.AX :
* CONFIRM THAT SUSTAINING CAPITAL EXPENDITURE OF US$470M NOW EXPECTED IN FY18
* REAFFIRMS PRIOR FY18 PRODUCTION GUIDANCE FOR OPERATIONS
* SALEABLE PRODUCTION OF 4.5MT IS NOW PROJECTED FOR ILLAWARRA METALLURGICAL COAL IN FY18 AT AN OPERATING UNIT COST OF US$130/T