Feb 15 (Reuters) - Barrick Gold Corp ABX.TO
* Barrick - Initiated a prefeasibility study to evaluate construction of an underground mine at Lama, on Argentinean side of Pascua-Lama Project
* Barrick Gold -Reported progress on projects with potential to contribute up to 1.1 million ounces of gold production at Cortez, Goldrush, Lagunas Norte, Turquoise Ridge
* Barrick Gold Corp says optimization work in Chile remains underway
* Barrick Gold Corp - Initial capital costs for project remain unchanged, and are estimated to be $153 million for Cortez underground expansion project Source text for Eikon: ID:nCCN2SJPMN Further company coverage: ABX.TO