31 July 2025
TORONTO, Ontario, July 31, 2025 – Aston Bay Holdings Ltd. (TSXV: BAY) (OTCQB: ATBHF) ("Aston Bay" or the "Company") is pleased to announce the commencement of its summer field program at its Epworth sediment-hosted copper-silver-zinc-cobalt project located 80 kilometres (“km”) southeast of Kugluktuk in Nunavut, Canada.
Field work will focus on the southern half of the property where the 2024 property-wide Mobile MagnetoTelluric (MobileMT) survey identified both deep, lower-frequency conductors (up to 900 m below surface) and near-surface, higher-frequency conductive anomalies. This area had seen only limited prospecting prior to the receipt of the new geophysical data. The conductors are postulated to correspond to pyritic and graphitic layers in the shales of the Recluse Group, which may act as a trap for metal-bearing fluids (see Aston Bay’s June 5, 2025, news release for more discussion). Exploration will also focus on the dolomites of the Lower Rocknest Formation and the clastic sedimentary rocks of the Upper Odjick Formation, which are known to host sediment-hosted copper mineralization such as that found in the Central African Copper Belt.
Initial mapping and prospecting have already identified several zones of copper mineralization spatially associated with the MT anomalies (Figures 1 and 2). Work will continue over several prospective areas in the southern half of the claim block in the coming weeks.
Six crew members from Emerald Geological Services are working at float-plane-supported campsites on the property.
“We are pleased to begin our summer mapping program at Epworth with immediate success in finding sediment-hosted style copper mineralization,” stated Thomas Ullrich, CEO of Aston Bay. “This ground truthing exercise located mineralization immediately above the large conductors defined by the MobleMT survey and supports our theory that those conductors may be potentially associated with a significant amount of mineralization yet to be discovered in the subsurface. These deposits, such as those in the Central African Copper Belt, can be very large and high-grade. We look forward to further results from the ongoing mapping as we gather information to aid in targeting for an anticipated drill program.”