Dakota Gold Provides Feasibility Study Metallurgy Testing Plan and Initial Results for Richmond Hill
Metallurgical Testing Plan Overview
Dakota Gold Corp. has announced a detailed Feasibility Study metallurgical testing plan for its Richmond Hill Oxide Heap Leach Gold Project. The program is designed to support final process selection and economic evaluation, with staged testing planned through the third quarter of 2026. Material for testing is being sourced from the company’s extensive 2025 drilling campaign.
Laboratory Testing and Sample Preparation
Approximately 4,000 kilograms of representative oxide material will be sent to a specialized metallurgical laboratory. The samples cover 28 distinct geo-metallurgical domains, ensuring broad project coverage. More than 30 column leach tests are planned to evaluate gold recovery, crush size performance, and heap permeability characteristics.
Initial Metallurgical Results
Early results from two composite samples taken from the MW3 zone have shown encouraging gold and silver grades. Initial column leach tests achieved gold recoveries of 61% to 65% within 60 days, confirming heap leach suitability. While results vary compared to historical data, they demonstrate consistent leaching behavior across tested materials.
Processing and Design Optimization
Preliminary testing suggests opportunities to optimize crushing requirements, equipment selection, and operating costs. Dakota Gold is also evaluating run-of-mine (ROM) heap leaching, which could reduce capital and operating expenditures if viable for certain material types. Further permeability and crush-size testing is ongoing.
Feasibility Study Progress and Outlook
The metallurgical program is a key component of the ongoing Feasibility Study and will support future permitting and development decisions. The company highlighted the project’s strong sensitivity to gold prices and plans to update mineral resources in 2026 using results from nearly 200 drill holes. Richmond Hill is being advanced toward potential production later this decade.
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