Sudbury's New Frontier: Errington Metals Hunts Overlooked Riches

SUDBURY, ON – April 22, 2026 – A new chapter in the storied history of the Sudbury Basin began today as Errington Metals Corp. (TSXV: EM) made its public debut on the TSX Venture Exchange. The milestone was marked not with boardroom ceremony, but with the launch of one of the most significant exploration campaigns the region has seen in over a decade—a bet that vast, overlooked riches of copper, zinc, gold, and silver lie waiting in a district world-famous for its nickel.

The company is immediately commencing a +45,000-meter diamond drilling program across its substantial land holdings. The aggressive campaign aims to validate and expand upon a wealth of historical data, targeting a type of mineralization that has long been overshadowed by the basin's nickel-copper goliaths. For investors and the regional mining industry, Errington's public listing represents a bold new thesis: that the next great Sudbury discovery may not be what the world expects.

A New Chapter for a Historic District

While major operators like Vale and Glencore have pulled nickel and copper from the Sudbury Igneous Complex for more than a century, Errington is focused on a different geological prize: Volcanogenic Massive Sulphide (VMS) deposits. These polymetallic systems, rich in copper, zinc, and precious metals, were formed in the crater fill above the main nickel-bearing structure. Errington's management believes this VMS potential has been historically underappreciated.

"Our listing marks the beginning of an exciting new chapter for Errington Metals," said Matthew Gollat, President & CEO, in a statement released today. "We have been hard at work over the past year, advancing a high–quality project with grade and scale potential, plus what we believe to be significant upside potential in a district that has supported mining for more than a century. The Sudbury Basin still has many stories left to tell -- and we intend to help write the next one."

The scale of the 2026 drill program underscores this ambition. At over 45,000 meters, it is the first exploration effort of its kind for this style of mineralization in the basin in more than ten years. The program is designed to move quickly, with an initial mineral resource estimate slated for the second half of 2026. This aggressive timeline signals the company's confidence in its geological model and the quality of the historical data guiding its drills.

Building on a Billion-Dollar Foundation

Errington Metals is not starting from scratch. The company's Sudbury Basin Project encompasses three historically known mineralized centers: Errington, Vermilion, and Balfour. The Errington and Vermilion deposits were the subject of extensive work by previous owner Xstrata (now Glencore), including over 75,000 meters of drilling between 2011 and 2014.

That work culminated in a historical resource estimate, last updated by Glencore as of December 31, 2024. The estimate outlines a substantial base of 9.4 million tonnes in the 'Measured' category and 2.7 million tonnes in the 'Indicated' category across the two deposits. This historical resource contains significant grades of zinc (3.98% Measured), copper (1.20% Measured), lead, silver, and gold.

Under Canadian securities regulations (NI 43-101), Errington cannot treat this as a current resource until it has completed its own verification work—a primary goal of the new drill program. However, the historical data provides a powerful head start, de-risking the project and offering a clear path toward defining a large-scale, multi-metal asset. Critically, much of the previous drilling stopped at relatively shallow depths of less than 400 meters, leaving the deposits open for expansion both at depth and along strike. Errington's new program will test these extensions, seeking to prove that the known deposits are just the tip of a much larger mineralized system.

The Balfour area, which was not included in the historical resource, represents a key upside target. Errington's drilling there aims to establish the continuity of mineralization with the goal of incorporating it into the company's maiden resource estimate later this year.

Unlocking Precious Metals and Critical Minerals

Beyond simply expanding the footprint of the deposits, Errington is focused on unlocking value that may have been previously left on the table. A key component of its strategy is a comprehensive metallurgical program designed to optimize the recovery of all payable metals, with a special focus on gold and silver.

While precious metals are known to occur throughout the VMS system, their recovery was not a primary focus of historical work. Errington's management believes that applying modern processing techniques could significantly enhance the project's economics by establishing a reliable and valuable precious metals stream. The company has already completed a first phase of metallurgical testing to understand the project's mineralogy and has now initiated advanced studies to develop an optimized processing flowsheet.

This work is set against the backdrop of a global push for critical minerals. Copper and zinc, the primary base metals at the Sudbury Basin Project, are essential components for the green energy transition, used extensively in electric vehicles, wind turbines, solar panels, and energy storage. By advancing a major new source of these metals within a stable, top-tier mining jurisdiction like Canada, Errington is positioning itself to meet this surging demand.

The company's public debut provides the capital and visibility to execute this multi-faceted strategy. With drills turning, an aggressive timeline, and a fresh perspective on one of the world's most prolific mining districts, Errington Metals is embarking on a high-stakes campaign to prove that Sudbury's next great mineral discovery has been hiding in plain sight all along.