Critical One Energy Confirms Target Depth Extension at Howells Lake Antimony-Gold Deposit
Critical One Energy Confirms Target Depth Extension at Howells Lake
Antimony-Gold Deposit
Toronto, ON – October 1, 2025 – Critical One Energy Inc. (formerly Madison Metals Inc.)
(“Critical One” or the “ Company”) (CSE: CRTL) (OTCQB: MMTLF) (FSE: 4EF0) , a leading
Canadian mining exploration company focused on critical metals and minerals, is pleased to
announce that advanced geophysical and geological model ling has confirmed significant
expansion potential of the antimony -gold deposit at its Howells Lake Antimony -Gold Project
(“Howells Lake Project”). The results underscore the potential for increased resource estimates ,
which Critical One will work to confirm with further drilling. The Howells Lake Project is located
approximately 200 kilometres (km) from the Ring of Fire corridor in the Thunder Bay Mining
Division of Ontario, Canada.
The recent Geotech VTEM geophysical survey, proprietary interpretive analysis combined with
detailed geological model ling, has identified previously unrecognized characteristics of the
antimony-gold mineralization at the East (V-3) Zone at Howells Lake. The data analysis reveals:
• Previous drilling at historical target V -3 (Howells Lake East Zone) intersected up to 75%
antimony within a core interval of 5.37% antimony over 8.35 meters *, alongside gold
mineralization
• Alteration mapping, data reconstruction, and geophysical model interpretation show the
East Antimony -Gold Zone to be a northwest-striking, northeast-dipping altered and
sulphide mineralized zone (mainly stibnite, pyrite, pyrrhotite)
• Modelling of the newly defined EM anomaly associated with the mineralized zone shows
an extension to depth of up to 400 m or more
• Antimony -gold mineralization is interpreted to be controlled by a late northwest-striking,
northeast-dipping alteration and fault zone
• Modelling is being used to help confirm and categorize numerous other antimony -gold
targets along the 30 km strike length of favourable geology on the Company ’s 25,000-
hectare property
“Our team’s rigorous application of cutting-edge geophysical techniques and geological modelling
has unlocked significant new potential at Howells Lake,” said Duane Parnham, Founder,
Executive Chairman and CEO of Critical One. “These results validate our exploration strategy
and position Howells Lake as a cornerstone asset with exceptional antimony and gold exploration
and development potential.”
Geological and geophysical data review and analysis are ongoing. Critical One is also advancing
its exploration program plans for follow -up drilling to delineate and expand the antimony -gold,
deposits (see the press releases dated August 28, 2025 and September 4, 2025, respectively).
Figure 1: Howells Lake East Zone (Sb and Au) Cross Section with 3D geophysical modelling
shown.
The Howells Lake Project hosts a historical resource of 1.7 million tons at a grade of 1.4%
antimony with associated gold mineralization. The resource is not National Instrument (NI ) 43-
101 compliant and therefore readers should not rely on the information. The resource estimate
does not include categories as required under NI 43-101 and the report predates NI 43-101 by
decades. Given the work was completed more than 40 years ago, all work will need to be redone
as the historic work cannot be used in a NI 43-101 compliant report. Geological mapping as well
as significant drilling will be required to establish a NI 43-101 resource estimate for the known
antimony mineralization. The resource presented in the report does not provide the parameters
used in the preparation of the resource estimate (tonnage estimate). Historical Report Reference:
Themistocleous, S.G., Idziszek, C., 1980. Miminiska Lake Project Northwestern Ontario
Geological Report, New Jersey Zinc Exploration Company (Canada) Ltd. (*Also see historical
information disclosure below.)
*Note: All geological and assay information contained in this document is historical in nature and
the Qualified Person (“QP”) responsible for the technical disclosure in this release is unable to
determine if any of that data would meet current NI 43-101 regulations regarding disclosure of
scientific and technical information. Additionally, the QP has not done sufficient work to make the
resource current. Drill intersections are reported as downhole intervals. No true width could be
determined at this time. The information in the data recovered is considered of value and relevant
to the Company’s project. However, the Issuer is not treating the estimate as current.
References:
1. Themistocleus, S.G., 1980. Miminiska Lake Project, Northwestern Ontario, Geological Report,
New Jersey Zinc Exploration Company (Canada) Ltd.
Qualified Person
Bruce Durham, P.Geo, a Qualified Person (“QP”) under NI 43-101, who is independent of the
Company, has reviewed and approved the technical content of this news release. All technical
information in this release is based on historical data that cannot be verified by the QP.
About Critical One Energy Inc.
Critical One Energy Inc. (formerly Madison Metals Inc.) is a forward-focused critical minerals and
upstream energy company, powering the future of clean energy and advanced technologies. The
Howells Lake Antimony-Gold Project focuses the Company’s exposure on antimony, one of the
most in-demand critical minerals, as well as gold, which is known to occur at numerous locations
on the Howells Lake Project. Backed by seasoned management expertise and prime resource
assets, Critical One is strategically positioned to meet the rising global demand for critical minerals
and metals. Its mine exploration portfolio is led by antimony-gold exploration potential in Canada
and uranium investment interests in Namibia, Africa. By leveraging its technical, managerial, and
financial expertise, the Company upgrades and creates high-value projects, thereby driving
growth and delivering value to its shareholders.
Additional information about Critical One Energy Inc. can be found at criticaloneenergy.com and
on the Company’s SEDAR+ profile at www.sedarplus.ca.
For further information, please contact:
Duane Parnham
Executive Chairman & CEO
Critical One Energy Inc.
+1 (416) 489-0092
Media inquiries:
Adam Bello
Manager, Media & Analyst Relations
Primoris Group Inc.
+1 (416) 489-0092
Neither the Canadian Securities Exchange nor CIRO accepts responsibility for the adequacy or
accuracy of this release.
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