Perpetua Resources Corp. has returned high-grade gold, antimony, and tungsten intercepts from its first exploratory drilling program in nearly a decade across its properties in Valley County, Idaho.

Drilling at the Stibnite Gold Project targeted areas within and around the permitted pit footprints. The work yielded several high-grade intervals, including a new gold-tungsten discovery in the Clark Tunnel Fault Zone along the southeastern edge of the proposed Yellow Pine pit. Hole SB597 intersected 21.3 metres grading 3.2 g/t gold and 0.9% tungsten from a depth of 24 metres, which included a 7.0-metre sub-interval grading 7.1 g/t gold and 0.3% tungsten from 34 metres.

Additional drilling in the Clark Tunnel Fault Zone returned high-grade gold and antimony, led by hole SB580 with 6.4 metres grading 16.2 g/t gold and 1.7% antimony from surface, and hole SB582 with 15.0 metres grading 6.3 g/t gold and 0.8% antimony from 11 metres. At the Huckleberry Fault Zone immediately adjacent to the Yellow Pine reserve pit, widely spaced drilling returned broad intervals of gold mineralization, including hole SB588 with 69.6 metres grading 0.8 g/t gold from 61 metres.

At the Hangar Flats deposit, drilling at the NDMEA zone intersected 3.0 metres grading 14.5 g/t gold from 82 metres. Separate critical mineral-focused drilling at Hangar Flats returned significant antimony-tungsten results excluding gold assays, highlighted by hole SB519 with 22.9 metres grading 3.2% antimony and 1.2% tungsten from a depth of 330 metres, including 4.4 metres grading 4.3% antimony and 3.3% tungsten.

The 2026 exploration program utilizes four drill rigs and aims to complete a minimum of 10,000 metres of core drilling. Approximately 5,800 metres of core drilling have been completed to date and are currently in preparation for assay. Any future development of target exploration areas located outside the scope of the currently permitted project will require additional environmental review and permitting before mining can commence.

The new intercepts and historic tungsten data have established tungsten as a new exploration focus and a potential second critical mineral for the project. Perpetua has submitted a grant funding proposal to U.S. government agencies to support drilling, metallurgical sampling, and resource evaluation for tungsten.

The exploration updates follow Perpetua's receipt of a US$2.9 billion senior secured long-term loan from the Export-Import Bank of the United States on May 21, 2026, to fund construction of the Stibnite project.

Read the full announcement: Perpetua Resources Reports New High-Grade Gold and Antimony Discoveries and a New Gold-Tungsten Zone at Stibnite