ESGold Corp. (CSE: ESAU) (OTCQB: ESAUF) Advances Subsurface Imaging to Expand Montauban Project Potential

• ESGold has completed data acquisition for a deep subsurface imaging survey at its Montauban Project in Quebec.
• The Ambient Noise Tomography (“ANT”) survey revealed imaging depths of over 800 meters—double the original plan.
• A 3D model integrating ANT data and historical information is in development to guide future drilling.
• The survey marks the first deep-sensing exploration campaign at Montauban, a fully permitted pre-production site.
• The company intends to begin production at Montauban in Q3 2025.
• Production is set to begin in the third quarter of 2025, with an initial throughput capacity of 500 tonnes per day, scalable to 1,000 tonnes.

ESGold (CSE: ESAU) (OTCQB: ESAUF), a fully permitted, pre-production resource company on a clear path to near-term gold and silver production, has completed a major step in advancing its Montauban Project in Quebec with the conclusion of a subsurface imaging survey that could redefine the geological scale of the site (https://ibn.fm/3Q3TY).

The company announced completion of the Ambient Noise Tomography (“ANT”) survey, conducted by Caur Technologies over a 10 km² grid. The geophysical work, which began in March 2025, is now in the processing and interpretation stage, with results expected before the end of April 2025. The imaging results will be used to build a comprehensive 3D model of the Montauban subsurface—its first ever.

Originally intended to reach depths of 400 meters, the ANT survey exceeded expectations. The geophones, which are up to ten times more sensitive than standard nodal equipment, captured data beyond 800 meters. This new depth range opens the door to identifying previously hidden mineralized zones and refining the project’s exploration targets.

Located roughly 80 kilometers west of Quebec City, the Montauban Project is a past-producing gold-silver mine. ESGold has invested more than C$15 million in infrastructure, including roads, power lines, and a 16,000-square-foot processing facility. Production is set to begin in the third quarter of 2025, with an initial throughput capacity of 500 tonnes per day, scalable to 1,000 tonnes.

ESGold believes Montauban may share geological similarities with Australia’s Broken Hill deposit, which has produced over $100 billion in metals. Both systems are polymetallic and structurally complex, traits that make deeper imaging especially relevant for uncovering additional mineral zones.

The collected data will be combined with geological mapping, previous drill results, and geochemical datasets to refine the site’s geological model. The integrated interpretation is expected to enhance ESGold’s ability to prioritize drill targets and reduce exploration risk going forward. This initiative also aligns with ESGold’s strategy to self-finance exploration by reprocessing the site’s historical tailings—over 900,000 tonnes in total. Revenue from early-stage operations will help fund ongoing exploration across Montauban’s district-scale land package.

Brad Kitchen, President of ESGold, said the ANT survey was a critical step forward in the company’s mission to fully define the mineralized potential at Montauban. “We are entering a new phase of discovery powered by cutting-edge imaging tools that will allow us to explore below the limits of historic drilling and uncover the full scope of the Montauban system,” Kitchen said. “Our team is excited and looks forward to sharing results with the market before the end of the month.”

In parallel with the imaging work, ESGold is preparing an updated Preliminary Economic Assessment (“PEA”). The new assessment will reflect the current environment of high gold and silver prices, updated resource potential, and revised production timelines. The previous PEA is being updated to incorporate both near-surface and potential deeper mineralization.

With processing results due in the coming weeks, investors will soon have a clearer view of what lies beneath the Montauban site. If the ANT survey confirms large-scale mineralized structures, ESGold may significantly expand its exploration footprint, boosting the longer-term value of the project as it nears production.

For more information, visit the company’s website at www.ESGold.com.

NOTE TO INVESTORS: The latest news and updates relating to ESAUF are available in the company’s newsroom at https://ibn.fm/ESAUF

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