Critical One Expands Howells Lake Property by 67% to Cover Numerous Newly Defined, High-Priority Antimony and Gold Targets
Critical One Expands Howells Lake Property by 67% to Cover
Numerous Newly Defined, High-Priority Antimony and Gold Targets
Toronto, ON – August 28, 2025 – Critical One Energy Inc. (formerly Madison Metals Inc.)
(“Critical One” or the “Company” or the “Issuer”) (CSE: CRTL) (OTCQB: MMTLF) (FSE: 4EF0),
a leading Canadian exploration company focused on critical metals and minerals, is pleased to
announce the expansion by 67% of land holdings at its wholly owned Howells Lake Antimony -
Gold Project (“Howells Lake Project”) in the Thunder Bay Mining Division of Ontario, Canada.
This strategic expansion follows the Company’s review and processing of the Governme nt of
Ontario’s soil sample analysis database for the Fort Hope region , and continues to strengthen
Critical One’s position as the owner and operator of Canada’s largest undeveloped antimony
deposit.
Recent analysis of soil results revealed high -priority antimony and gold anomalies in multiple
unexplored areas, prompting Critical One to stake additional claims to secure numerous newly
identified, high-priority antimony targets. Soil samples from up to five kilometres (km) west of the
known antimony-gold mineralization in the V-3 grid area returned the highest antimony values in
the entire dataset of more than 3,600 widespread sample sites, with numerous new target areas
revealing values that exceed those found proximal to the values at and near known antimony and
gold on the property. Previous drilling at V-3 intersected up to *75% antimony within a core interval
of 5.37% antimony over 8.35 meters , alongside gold mineralization (see May 14, 2025 press
release). These results highlight the potential for further expansion of the known antimony -gold
mineralized zones, which remain open along strike and at depth, as well as the potential to locate
completely new areas of mineralization.
“The expansion of our property marks a pivotal milestone for Critical One as we continue to unlock
the immense potential of the Howells Lake Project,” said Duane Parnham, Founder, Executive
Chairman and CEO of Critical One. “With this move, Critical One now controls all significant
antimony-gold targets over a 30 km strike length , creating the opportunity to transform Howells
Lake into a unique, district-scale project.”
Parnham continued, “The presence of highly anomalous geochem ical results at many new
locations validates our exploration strategy and underscores the project’s significance as a rare,
large-scale antimony -gold system located in a tier-one jurisdiction. By securing additional
property, we have significantly added to the discovery potential elsewhere on our project as we
build its long-term potential to meet the growing global demand for critical minerals, while
delivering value to our shareholders.”
Key Highlights of the Expansion:
• Compelling Targets Identified : Lake sedimentary geochemical (LSG) databases
released by the Ontario government in 200 0 (OGS/MNDM data release August 2000,
MRD089).
o Identified very strong multi-location antimony-gold targets along strike and up to 5 km
southwest of the main historical antimony resources , which included assay intervals
grading as high as *59.2% antimony and 14.19 grams per tonne gold (see May 14,
2025 press release).
• Strategic Properties Acquired: Critical One has acquired an additional 9,979 hectares,
increasing the Howells Lake Project's total land package to 24,887 hectares.
• Untapped Potential: The newly staked areas cover extensions of known antimony -gold
mineralization as well as completely untested geochem ical targets, many of which host
prospective geophysical anomalies already identified in historic wide-spaced Ontario
government magnetic and electromagnetic geophysical data.
• Strategic Positioning: With antimony prices surging over 550% since 2015 due to global
supply constraints and China's 2024 export ban, Critical One is poised to address critical
mineral supply chain challenges for defence, battery technologies, and clean energy
applications.
Additionally, the Company wishes to announce the completion of more than 3 ,000 km of VTEM
airborne geophysics by Geotech over the entire Howells Lake Project. The geophysical data is
currently being processed to provide details on specific target selection , definition and
interpretation. Additional news will be released as this work progresses.
The Howells Lake Project, located near Ontario’s Ring of Fire corridor, hosts a historical resource
of 1.7 million tons at a grade of 1.4% antimony with associated gold mineralization. The resource
is not 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 would 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).
The newly staked claims cover extensions of the known areas of antimony mineralization, where
historic drilling and recent surface sampling confirm ed the presence of broad zones of strong
shearing, carbonate, and sericite alteration that are known to host antimony and gold
mineralization.
Critical One is advancing its exploration program with plans for follow -up drilling to further
delineate and expand the antimony -gold resource. Supported by a recent private placement of
CDN$3.3 million and a clean capital structure with approximately 50 million common shares
outstanding, the Company remains fully funded for near-term exploration, including a maiden drill
program on the V-3 historical antimony deposit and drilling of other antimony-gold target zones.
Figure 1: Land position and antimony LSG results.
*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 recovered data , however, is considered to be of
value and relevant to the Company’s project. However, the Issuer is not treating the estimate as
current.
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
addition of the Howells Lake Antimony -Gold Project broadens the C ompany’s exposure to
antimony, one of the most in -demand critical minerals. 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 m ine 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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