Jan 18 (Reuters) - Whitehaven Coal Ltd WHC.AX :
* ROM COAL PRODUCTION OF 5.4MT FOR QUARTER AND 11.2MT FOR FIRST HALF
* SALEABLE COAL PRODUCTION OF 5.0MT FOR QUARTER AND 10.9MT FOR FIRST HALF
* SALEABLE COAL PRODUCTION GUIDANCE FOR FY2018 HAS BEEN REDUCED TO RANGE OF 20.5MT TO 21.0MT
* COAL SALES, INCLUDING PURCHASED COAL, OF 5.8MT FOR QUARTER AND 11.9MT FOR FIRST HALF
* REVISED FY2018 PRODUCTION GUIDANCE FOR NARRABRI MINE; NOW EXPECTED TO BE IN RANGE OF 6.0MT AND 6.5MT ROM COAL