Omineca restarts tunnelling, operations at Wingdam

Executive Summary

• Omineca Mining and Metals provided an operational update on its Wingdam underground paleoplacer project in British Columbia, confirming that mining contractor D&L Mining has resumed tunnelling and placer recovery operations at crosscut 3A.
• The company reported that initial excavations into the channel interior have yielded increasing amounts of placer gold and nuggets compared to earlier bedrock contact zones, with plans to fully tabulate recoveries subject to QA/QC.
• Additionally, approximately 3,500 metres of core from six holes drilled during the 2025 winter program have been logged and sampled, with assay results pending.

Key Details

• Operational Status: Tunnelling and placer recovery operations recommenced at crosscut 3A following the year-end holiday break.
• Geological Conditions: Operations initially encountered a fault zone at the channel periphery, requiring modified grout formulations and spiling patterns. Ground conditions have since stabilized, allowing a return to standard procedures.
• Production Outlook: D&L Mining anticipates an increased pace for tunnelling and excavation within the more competent compacted sand and gravel of the channel interior.
• Gold Recovery: Pay gravels from the initial advance into the channel interior have shown increasing gold and nugget yields compared to the bedrock contact zone.
• Reporting Plan: Placer gold recoveries will be fully tabulated and reported once QA/QC is complete by a qualified person as the crosscut progresses through the central main placer gold target.
• Exploration Drilling: Approximately 3,500 metres of core from six holes drilled during the 2025 winter drill program have been logged, split, and sent for assay.
• Future Plans: A follow-up drill program will be designed based on the incoming assay results.

Notable Quotes

• "Having safely managed the faulted ground conditions, D&L anticipates the tunnelling and excavation will proceed at an increased pace within the more competent compacted sand and gravel of the channel interior."
• "As expected, pay gravels excavated from the initial advance into the channel interior have yielded increasing amounts of placer gold and nuggets compared with the earlier bedrock contact zone."