LAURION Advances Environmental and Permitting Activities at Ishkōday Gold and Polymetallic Project

LAURION Advances Environmental and Permitting Activities at Ishkōday Gold and Polymetallic Project TORONTO ONTARIO, September 18, 2026 – TheNewswire — LAURION Mineral Exploration Inc. (TSX-V: LME | OTC: LMEFF | FSE: 5YD) ("LAURION" or the "Company") is pleased to provide shareholders with an update on the environmental, technical and regulatory work supporting the continued advancement of the Company's 100%-owned Ishkōday Gold and Polymetallic Project in the Onaman-Tashota, Beardmore-Geraldton Greenstone Belt of Northwestern Ontario.

LAURION is currently advancing two complementary initiatives associated with the historical Sturgeon River Mine: the recovery and remediation of the historical surface waste rock stockpile and the Company’s proposed Advanced Exploration Project focused on dewatering, rehabilitating and evaluating the historical Sturgeon River Mine shaft and underground workings.

Over the past five years, LAURION has undertaken a comprehensive program of environmental baseline studies, technical investigations, indigenous and regulatory consultation to characterize existing site conditions and support project planning and applicable regulatory approvals.

Surface Stockpile Recovery

LAURION has submitted an application for a Recovery of Minerals Permit to the Ministry of Energy and Mines, including a Recovery and Remediation Plan, under section 152.1 of Ontario’s Mining Act and Ontario Regulation 463/24.

The Sturgeon River Mine surface waste rock stockpile is a legacy of historic mining operations and based on historic and current technical information, contains mineralized material that LAURION is seeking authorization to recover under Ontario's regulatory framework for the recovery of minerals.

The material currently exists on surface as a result of decades-old operations and its recovery is not expected to require new infrastructure, mining or underground development.

The proposed work would involve the recovery of minerals from the historical surface waste rock stockpile through removal and off-site processing of the material, followed by remediation of the stockpile area in accordance with applicable provincial standards.

These activities take into consideration, and are supported by, the assessment of potential environmental effects and identification of appropriate environmental protection and remediation measures.

Shaft Dewatering and Advanced Exploration

Separately, LAURION is advancing its plans to rehabilitate the historical Sturgeon River Mine shaft to facilitate further evaluation and exploration of the historical in-situ resource potential.

The historical mine workings include a vertical shaft extending approximately 642 metres below surface and 15 historical underground levels.

The mine has remained flooded since historical operations ceased, with approximately 114,000 cubic metres of static water previously estimated to be contained within the underground mine workings.

The proposed Advanced Exploration Project would involve removal of the existing shaft cap, rehabilitation of the shaft collar and installation of a temporary exploration headframe and hoisting plant to allow for safe access, controlled dewatering of the shaft, and progressive rehabilitation of the shaft and existing underground levels.

Once safe underground access has been established, LAURION intends to undertake underground exploration drilling and sampling to further evaluate the deposit and mineralized system.

No commercial mineral production or ore processing is currently proposed as part of the Advanced Exploration Project.

To facilitate the evaluation and exploration of the historical underground workings, LAURION is currently preparing a Permit to Take Water (“ PTTW ”) application for the dewatering activities to submit to the Ministry of the Environment, Conservati...