 VANCOUVER, British Columbia, Oct. 06, 2021 GLOBE NEWSWIRE -- Integra Resources Corp. Integra or the Company TSX-V: ITR; NYSE American: ITRG is pleased to provide an update on the Companys PFS which is expected to be completed in Q4 2021. As previously reported, the Company has been working on a series of trade-off studies to optimize both the heap leach and mill processing circuits. This work was aimed at incorporating a significant portion of the unoxidized resource from the DeLamar deposit which was excluded in the 2019 PEA and improving the silver recoveries. 