Perpetua Resources expects USFS to publish Supplemental DEIS for Stibnite Gold Project in Q4 2022

PERPETUA RESOURCES CORP.

USFS cooperating agency review complete; SDEIS in final reviews in Washington D.C.
Company believes SDEIS will show improved environmental outcomes and may lead to preferred alternative.
Project designed to become only domestic mined source of critical mineral antimony.
Antimony essential for defense supply chains; US currently reliant on China, Russia, Tajikistan.
Congress authorized 10% production tax credit for antimony in Inflation Reduction Act.

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