Errington Metals Expands Depth Potential at the Errington Zone

Errington Metals Expands Depth Potential at the Errington Zone Canada NewsWire THUNDER BAY, ON, Sept. 3, 2026 Press Release Summary: Initial 2026 drilling results confirm multiple high-grade copper-zinc-lead-gold-silver intercepts at the Errington Zone, including 11.0 metres grading 6.41% CuEq in hole EME-26-086. Results continue to demonstrate the potential to expand mineralization at depth, where the Errington Zone remains open for further growth. Elevated gold and silver values in the eastern part of the zone highlight the potential for precious metals to enhance overall value per tonne. New drilling supports an evolving geological model in which mineralization may be faulted and offset down-dip rather than closed off by folding, creating additional exploration opportunities. Borehole electromagnetic surveys are underway to identify conductive sulphide targets and help guide the next phase of deeper drilling. THUNDER BAY, ON, Sept. 3, 2026 /CNW/ -- Errington Metals Corp. (TSXV: EM) ("Errington" or the "Company") is pleased to announce initial results from its 2026 Spring exploration program at the Errington Zone. The results include multiple polymetallic intercepts and, importantly, continue to demonstrate the potential to grow the deposit. Drilling has extended the Company's understanding of mineralization in the eastern portion of the zone, where elevated gold and silver values continue to contribute meaningfully to overall grade and potential value per tonne. Highlights of this initial drilling are summarized below, with a full table of assay results provided in Table 1. Highlights:1 11.0m grading 1.75% Cu, 8.63% Zn, 2.05% Pb, 1.66 gpt Au, 104.5 gpt Ag, 6.41% CuEq in EME-26-086 19.3m grading 0.69% Cu, 3.29% Zn, 1.12% Pb, 0.83 gpt Au, 42.6 gpt Ag, 2.68% CuEq in EME-26-089 12.3m grading 0.43% Cu, 6.10% Zn, 1.41% Pb, 1.22 gpt Au, 41.7 gpt Ag, 3.49% CuEq in EME-26-100 8.90m grading 0.69% Cu, 8.78% Zn, 2.57% Pb, 0.91 gpt Au, 86.2 gpt Ag, 4.83% CuEq in EME-26-083 ________________________________________________ 1 True widths are expected to be 70% to 100% of drilling widths listed in the table. Cu Eq is copper equivalent calculated as Cu (%) + Zn (%) x 0.273 + Pb (%) x 0.167 + Ag (gpt) x 0.0081 + Au (gpt) x 0.6752. Metal prices used Copper $4.5/lb ($9921/tonne), Zinc $1.3/lb ($2866/tonne), Lead $0.90/lb ($1984/tonne), Gold $2500/oz, Silver $30/oz, Recoveries are set at Copper 90%, Zinc 85%, Lead 75%, Gold 75%, and Silver 75%. Copper equivalent values are provided for illustrative purposes only. No allowance has been made for payability, smelter terms, refining charges, penalties, or deleterious elements A video outlining the full context of the new drilling results can be viewed at https://vrify.com/meetings/recordings/c7c8e371-e8c3-4c86-9de7-73950731f86c. Matthew Gollat, President and CEO of Errington Metals, commented: "These initial results from the 2026 drill program are an exciting step forward for Errington. We continue to intersect strong polymetallic mineralization at depth, including meaningful precious metals values that can enhance the overall value of this opportunity. Just as important, the drilling is improving our understanding of the structures that control mineralization and is opening up new areas to follow the system down-dip. The Errington Zone remains open, and these results give us a clear path to target additional growth as we advance the next phase of drilling." The 2026 program was designed to test the depth extension along the full strike extent of the Errington mineralized zone, including the West and 1500 areas, where assays remain pending. At Errington Main, drilling tested extensions of mineralization within the major fault blocks, with an initial focus on the eastern portion of the Main and Christie Blocks. Results continue to show elevated gold associated with massive sulphide mineralization in the eastern part of Errington, building on the higher precious metals signature first recognized in 2025 drilling, when drill hole EME-25-047 intersected 21.5 m grading 0.38% Cu, 0.08% Zn, 0.13% Pb, 1.23 g/t Au and 24.7 g/t Ag (see Errington's June 9, 2026 press release). Overall, the new drilling suggests that massive sulphide mineralization persists at depth at grades comparable to the upper portion of Errington, while the eastern part of the zone continues to show elevated gold values that may add to the value of future tonnes. All holes drilled encountered mineralization within the Vermilion chert-carbonate breccia horizon or as stringer sulphides within the footwall volcanic rocks. Holes that intersected stringer mineralization may point to additional offset or folding of the massive sulphide horizon, providing further targets for follow-up drilling. Borehole electromagnetic surveys of the 2026 drill holes have been initiated to detect conductive sulphide mineralization off-hole, which is expected to provide an important targeting tool for testing deeper extensions of the system. Previously, mineralized horizons at Errington had been interpreted to be folded at depth, which suggested the system could be constrained near the bottom of a hinge zone. The most recent drilling supports a more encouraging interpretation: mineralization is likely faulted and offset down-dip rather than terminating, meaning the Errington Zone remains open at depth and has clear potential for continued expansion with additional drilling. Cross section line is shown on Figure 1. The view is toward northeast and the depth of view is 50m. Abbreviations for stratigraphic units: ONW = Onwatin argillite, VRM = Vermilion chert-carbonate, ONA = Onaping andesite ash tuff. Table 1: Assay results to date for holes drilled at Errington Main. Hole ID Zone From (m) To (m) Width (m) Cu (%) Zn (%) Pb (%) Au (gpt) Ag (gpt) CuEq (%) EME-26-082 Christie 399.2 399.7 0.5 0.17 0.04 0.01 0.07 1.8 0.24 EME-26-086 Christie 403.3 410.3 6.9 0.99 0.12 0.07 0.33 22.3 1.44 EME-26-086 Christie 427.2 438.1 11.0 1.75 8.63 2.05 1.66 104.5 6.41 EME-26-089 Christie 394.0 413.3 19.3 0.69 3.29 1.12 0.83 42.6 2.68 EME-26-100 Christie 443.1 455.4 12.3 0.43 6.10 1.41 1.22 41.7 3.49 EME-26-075 Main 339.2 345.2 6.0 0.10 3.40 1.28 0.61 42.2 2.00 EME-26-076A Main 395.9 401.2 5.3 0.70 0.02 0.33 0.04 27.1 1.01 EME-26-081 Main 371.0 373.2 2.3 0.10 0.34 0.63 0.15 12.5 0.50 EME-26-081 Main 383.5 386.0 2.5 0.02 2.23 0.19 0.11 4.6 0.77 EME-26-083 Main 397.6 406.6 8.9 0.69 8.78 2.57 0.91 86.2 4.83 EME-26-085 Main 381.5 384.0 2.5 0.31 2.22 0.88 0.34 26.8 1.52 EME-26-087A Main 421.2 425.1 3.9 0.08 0.12 0.27 0.06 7.9 0.27 1. Intervals reported are downhole depths. True width represents 70%-100% true width as drill holes are designed perpendicular to the regional stratigraphic orientation. 2. Cu Eq is copper equivalent calculated as Cu (%) + Zn (%) x 0.273 + Pb (%) x 0.167 + Ag (gpt) x 0.0081 + Au (gpt) x 0.6752. Metal prices used Copper $4.5/lb ($9921/tonne), Zinc $1.3/lb ($2866/tonne), Lead $0.90/lb ($1984/tonne), Gold $2500/oz, Silver $30/oz, Recoveries are set at Copper 90%, Zinc 85%, Lead 75%, Gold 75%, and Silver 75%. 3. Copper equivalent values are provided for illustrative purposes only. No allowance has been made for payability, smelter terms, refining charges, penalties, or deleterious elements. About Errington Metals Errington Metals Corp. is a Canadian exploration and development company focused on critical and precious metals. The Company is advancing its wholly owned Sudbury Basin Project, which hosts high-grade volcanogenic massive sulphide ("VMS")-style mineralization in the world-renowned Sudbury mining district. Through systematic drilling, disciplined technical work and a planned initial mineral resource estimate, Errington Metals is positioning the Sudbury Basin Project as a high-quality exploration and development opportunity. The Company is advancing a planned 45,000-metre drill program designed to support an initial mineral resource estimate and test regional targets. For further information about the Company, please visit www.erringtonmetals.com and sign up for email updates. QAQC Procedures Core samples are collected and handled using standard industry protocols. Sampling, core-cutting and submission to the assay lab were conducted and supervised by Errington Metals personnel. Assay results have been verified by Errington Metals via Certified Reference Material standards, blanks and field duplicates. Samples were submitted to Activation Laboratories Ltd. (Actlabs) in North Bay, Ontario who is registered to international quality standards through the International Organization for Standardization / International Electrotechnical Commission (ISO/IEC) 17025:2017 (including ISO 9001:2015 and ISO 9002 specifications). Actlabs is accredited to the Standards Council of Canada (SCC) Requirements and Guidance for the Accreditation of Testing Laboratories, specific to mineral, forensic and environmental testing laboratories. Samples are crushed, pulverized then digested using a four-acid solution and analysed using a combination of ICP-MS and ICP-AES methods. Gold is independently analysed using a 30 g sample by fire assay methods. Analyses are completed in Ancaster, Ontario. Certified reference material standards and blanks were inserted into the sample stream and internal standards and blanks were concurrently analysed by the lab. All data are reported and certified by Actlabs. Qualified Person The scientific and technical information in this press release has been reviewed and approved by Frank Santaguida, Ph.D., P.Geo. Mr. Santaguida is Vice President, Exploration for Errington Metals Corp. and is a qualified person under National Instrument 43-101. Table 2: Drill hole collar locations. Hole number Depth (m) East North Elevation (m) Azimuth (deg) Dip (deg) EME-26-075 399 480414 5154045 275 341.4 -59.8 EME-26-076A 414 480365 5154051 277 340.6 -69.4 EME-26-081 450 480286 5153988 285 341.5 -68.5 EME-26-082 441 479906.6 5153868 265 348.4 -67.3 EME-26-083 450 480246 5153952 281 338.7 -64.6 EME-26-085 426 480194 5153944 285 336.9 -64.3 EME-26-086 501 480046 5153830 275 338.1 -60.3 EME-26-087A 462 480299.3 5153901 275 340.5 -61.3 EME-26-089 441 480117 5153903 275 343.1 -69.9 EME-26-100 519 480140 5153846 281 339.8 -60.6  The listed Easting and Northing are in UTM Zone 11N NAD83 coordinate system. Cautionary Note Regarding Forward-Looking Information This news release contains forward-looking statements and forward-looking information (collectively, "forward-looking statements") within the meaning of applicable securities laws. Any statements that are contained in this news release that are not statements of historical fact may be deemed to be forward-looking statements. Forward-looking statements are often identified by terms such as "may", "should", "anticipate", "will", "estimates", "believes", "intends", "expects" and similar expressions which are intended to identify forward-looking statements. Forward-looking statements are inherently uncertain, and the actual performance may be affected by a number of material factors, assumptions and expectations, many of which are beyond the control of the Company, including expectations and assumptions concerning the Company and its Sudbury Basin Project. Readers are cautioned that assumptions used in the preparation of any forward-looking statements may prove to be incorrect. Events or circumstances may cause actual results to differ materially from those predicted as a result of numerous known and unknown risks, uncertainties and other factors, many of which are beyond the control of the Company. Readers are further cautioned not to place undue reliance on any forward-looking statements, as such information, although considered reasonable by the management of the Company at the time of preparation, may prove to be incorrect and actual results may differ materially from those anticipated. The forward-looking statements contained in this news release are made as of the date of this news release and are expressly qualified by the foregoing cautionary statement. Except as expressly required by securities law, the Company does not undertake any obligation to update publicly or to revise any of the included forward-looking statements, whether as a result of new information, future events or otherwise. Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein. SOURCE Errington Metals Corp. View original content to download multimedia: http://www.newswire.ca/en/releases/archive/September2026/03/c0985.html Contact: For Further Information Please Contact: Matthew Gollat, President & CEO, Errington Metals Corp., Toll-Free: 1-888-279-1157, Direct: 1-807-577-5785, [email protected], www.erringtonmetals.com