Dec 14 (Reuters) - Independence Group NL IGO.AX :
* Opportunity for an additional increase to the optimisation study project npv1 of over 10% has been recognised and will be assessed further during the operational phase
* 27% reduction in expected life of mine c1 cash costs (after by-product credits) in concentrate from $1.66/lb to $1.21/lb nickel
* Nova project is now expected to deliver an additional 41%, 108% and 83% of free cash flow in cy17, cy18 and cy19 when compared to the dfs
* Says project initial capital remains at $443M
* Lom all-in sustaining cash costs decreased by approximately 21% to an expected $1.83/lb nickel (after by-product credits) in concentrate
* Source text for Eikon ID:nASX411LMJ