en.Wedoany.com Reported - Antipa Minerals has confirmed a conventional processing route and updated geotechnical parameters during pre-feasibility study (PFS) testing for the Minyari Dome gold-copper project in Western Australia, providing a more reliable technical foundation for project development. The company stated that these parameters help optimize potential mine plans.

Completed metallurgical test work indicates that Minyari Dome mineralization is amenable to conventional gold-copper processing flowsheets, achieving high gold recovery rates and rapid leaching kinetics, with the potential to produce gold bullion and commercial-grade copper concentrate. Updated geotechnical studies support steeper overall open-pit slope angles in transition and primary mineralization zones compared to earlier scoping study assumptions. Antipa Minerals stated that the revised parameters provide key inputs for ongoing PFS optimization, including assessing the feasibility of deeper open-pit mining and reducing or eliminating reliance on underground mining in the initial development plan.

Antipa Minerals Managing Director Roger Mason noted that the latest results strengthen the project's technical outlook. He stated that PFS-level metallurgical testing confirms Minyari mineralization is suitable for conventional processing, achieving high gold recovery rates with the potential to produce gold bullion and a separate commercial-grade copper concentrate. On the mining side, updated geotechnical parameters support steeper open-pit slope angles, providing an important basis for pit optimization and evaluating deeper mining, as well as reducing or eliminating underground mining. Mason said that as Antipa advances all PFS work streams, these results solidify Minyari's technical foundation as a standalone gold-copper development project in the Paterson Province.

The company stated that the PFS is progressing through an integrated project, with key technology work streams either completed or at an advanced stage, covering metallurgy, geotechnical design, mine planning, permitting, environmental studies, and project financing preparation. Currently, Antipa is focused on integration and optimization studies, including finalizing mine design inputs, processing assumptions, capital and operating cost estimates, permitting schedules, and development execution plans. The company expects to complete PFS technical work streams in the third quarter of 2026, followed by the release of PFS results, while continuing to accelerate Definitive Feasibility Study activities.