Critical One Confirms Howells Lake Antimony-Gold Project Details During CEO Field Review
Critical One Confirms Howells Lake Antimony-Gold Project Details During CEO
Field Review
Toronto, ON – July 23, 2025 – Critical One Energy Inc. (formerly Madison Metals Inc.) (“Critical
One” or the “Company”) (CSE: CRTL) (OTCQB: MMTLF) (FSE: 4EF0) , a leading Canadian
exploration company focused on critical metals and minerals, is pleased to announce its CEO-
led, initial project investigation successfully located and validated multiple key metrics and
historical landmarks around the Howells Lake antimony-gold deposit and elsewhere on the
Howells Lake Antimony-Gold Project (“Howells Lake Project”) in the Thunder Bay Mining Division
of Ontario, Canada.
During t he site visit , historic tr enches were relocated , and surface antimony (stibnite)
mineralization at the trenches was sampled and immediately submitted for analysis. The team
also determined the locations of some of the historic drill hole collars in advance of the Company
commencing more extensive fieldwork, which will include a detailed, property-wide, state-of-the-
art airborne magnetic and electromagnetic geophysical survey. These investigations are part of
a comprehensive initiative designed to evaluate the size and grade of the historic antimony-gold
mineralized zones already identified from the original discovery work in 1979 as well as to identify
new, high-priority antimony and gold exploration targets across the 26-kilometre-long property,
which will continue to reinforce Critical One’s position as the operator of Canada’s largest
undeveloped antimony deposit.
Summary Highlights from CEO-led Field Investigation:
• Antimony mineralization was located and sampled for immediate analysis.
• Historic drill core hole collars and surface trenches were identified and geolocated.
• 1984 drill core was located and initial evaluation completed (antimony reported in some
drill logs – no assays available).
• Some or all of the 1986 drill core from holes completed 15 kilometres to the northeast of
the Howells Lake antimony -gold deposit area was located and determined usable for
follow-up evaluation (gold mineralization reported).
• Logistics evaluated and organized for future exploration programs.
• Broad zones of strong carbonate and sericite alteration up to 100 metres wide were
confirmed to cover and flank the locations of the known antimony-gold mineralization.
More details on structure, alteration and gold mineralization were documented.
“With this new information in hand, Critical One can continue to develop plans for a significant
field exploration program designed to evaluate targets developed from this new information and
from new airborne geophysical data that will soon be arriving daily from the field ,” said Duane
Parnham, Executive Chairman and CEO of Critical One.
The new information gathered while on site allowed Critical One to confirm the ground location of
the known antimony-gold mineralization and the locations of enough of the historic work that the
Company is now confident the antimony-gold mineralization is related to strong carbonate sericite
alteration (including green mica) with accessory quartz carbonate veining and sulphides that
include stibnite (antimony sulphide), pyrite, pyrrhotite, chalcopyrite, and sphalerite. Some of the
suphide concentrations , including the stibnite mineralization , are broadly associated with the
lower contact of a quartz feldspar porphyritic intrusive at the East Zone. A current understanding
of the antimony mineralization in the vicinity of the East Zone is depicted in Figure 3 below. Low
gold values are located proximally and in places coincident with the antimony mineralization. The
zone of strong alteration and antimony mineralization remains completely open to further
significant expansion to depth and remains open along strike.
Figure 1: Howells Lake quartz carbonate with
green mica and stibnite (antimony sulphide).
Figure 2: Howells Lake Project . Strong
carbonate with dark veinlets of stibnite
(antimony sulphide).
Figure 3: Cross-section of Howells Lake Project (northwest view).1
Antimony, a critical mineral essential for military defence, battery technologies, and flame
retardants, is in high demand in North America and Western countries due to global supply
constraints, with over 80% of the world’s supply controlled by China and Russia. The Howells
Lake Project, strategically located near Ontario’s Ring of Fire corridor, positions Critical One to
address current supply chain challenge s while advancing gold exploration in a tier-1 mining
jurisdiction.
Note: All geological and assay information contained in this document is historical in nature and
the Qualified Person responsible for the technical disclosure in this release is unable to determine
if that data would meet current NI 43 -101 regulations reg arding disclosure of scientific and
technical information for mineral exploration properties. Drill intersections are reported as
downhole intervals. No true width could be determined. The information in the recovered data is
considered of value and deemed to be very relevant to the Company’s project.
1 Themistocleous, S.G., 1980. Miminiska Lake Project Northwestern Ontario Geological Report,
New Jersey Zinc Exploration Company (Canada) Ltd. and MIMINISKA LAKE PROJECT
Northwestern Ontario Geological Report NTS52/P.
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 Company’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 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
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accuracy of this release.
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