$PNN ASX / $PEIMF OTC Highlights... *Power Minerals upgrades Rincon salar resource by 343% to 292,564t LCE *More than half of the resource is in the high confidence measured and indicated categories, which enables mine planning *Company to finalise a preliminary economic assessment for lithium production at Rincon https://stockhead.com.au/resources/district-size-and-scale-milestone-resource-upgrade-delivers-at-power-minerals-salta-lithium-brine-project/