Stuhini Engages Tetra Tech to Advance Economic Assessment of Ruby Creek Molybdenum Deposit
Stuhini Engages Tetra Tech to Advance
Economic Assessment of Ruby Creek
Molybdenum Deposit
Vancouver, British Columbia--(Newsfile Corp. - October 21, 2025) -
Stuhini Exploration Ltd
. (TSXV:
STU) (OTCQB: STXPF) (WKN: A2PLBV) ("
Stuhini
" or the "
Company
") is pleased to announce that it
has engaged Tetra Tech Canada Inc. ("
Tetra Tech
") to complete a conceptual-level economic viability
assessment of the molybdenum deposit at the Company's 100%-owned Ruby Creek Project, located
near Atlin, British Columbia. The engagement marks the first step to advance the economic assessment
of Ruby Creek and, contingent on market conditions, to prepare a preliminary economic assessment
("
PEA
").
"
With molybdenum increasingly recognized as a critical metal in both industrial and green-energy
applications, we believe Ruby Creek stands out as one of the more compelling undeveloped
molybdenum assets in North America,
" said Meredith Eades, President and CEO of Stuhini.
"
Engaging Tetra Tech is an important milestone in understanding the deposit's viability and
advancing this part of our portfolio. It also reflects our broader strategy to unlock value on both the
development and discovery fronts at Ruby Creek."
A PEA is a scoping-level technical study that provides an early-stage evaluation of a mineral project's
potential economic viability. It often incorporates inferred mineral resources to estimate capital and
operating costs, revenue forecasts, and development scenarios, helping companies assess whether to
advance the project to more detailed studies.
Tetra Tech's assessment will draw on a robust historical archive, including a 2006 feasibility study
1
,
approximately 74,000 metres of drilling, extensive metallurgical and environmental work, and an existing
BC Mines Act permit (currently in care and maintenance). Combined with updated market pricing and
cost inputs, the study will provide a refreshed look at the development potential of what the Company
believes is one of Canada's most compelling undeveloped molybdenum assets.
Ruby Creek Molybdenum Deposit Highlights:
The Ruby Creek molybdenum deposit is a porphyry-style system with a 2022 NI 43-101 mineral resource
estimate
2
of:
433 million pounds of molybdenum in the measured and indicated category (369.4 million tonnes
at 0.053% Mo), and
43.7 million pounds in the inferred category (41.9 million tonnes at 0.047% Mo).
(See press release dated March 15, 2022.)
Located in the prolific Atlin Mining District of northwestern British Columbia, the Ruby Creek deposit sits
within a stable, mining-friendly jurisdiction, is fully road-accessible, and benefits from proximity to a
growing hydro-electric infrastructure initiative led by the Taku River Tlingit First Nation. The project has
seen more than 30 years of exploration and development, including:
~74,000 metres of drilling.
A historic 2008 feasibility study.
A 2022 updated mineral resource estimate (see the Ruby Creek Technical Report filed on the
Company's profile on SEDAR+).
Mineralization remains open in three directions and at depth including 45 metres grading 0.23%
Mo at the bottom of hole AD-417.
The deposit is part of the larger 29,734-hectare Ruby Creek Project, which is 100%-owned by Stuhini
and hosts 48 documented mineral occurrences, including other zones prospective for gold, silver, and
tungsten.
About Tetra Tech:
Tetra Tech is a leading global consulting and engineering firm with extensive experience in resource
development, permitting, and economic assessment. Their team has deep expertise in porphyry-style
molybdenum systems, having completed the 2022 feasibility study for the Malmbjerg Molybdenum
Project in Greenland, a large-scale deposit comparable in mineralogy and scale to Ruby Creek. Tetra
Tech previously advanced Ruby Creek to the feasibility study stage in 2008, providing them with a
unique familiarity with the project's data and development history.
About Molybdenum:
Molybdenum is a high-strength, high-melting-point metal with critical applications across industrial,
energy, and defense sectors. Its primary use is as an alloying element in steel—enhancing strength,
corrosion resistance, and hardness. These properties make it essential for demanding environments
such as oil and gas pipelines, high-speed rail systems, and structural steel. By improving strength-to-
weight ratios, molybdenum enables lighter, more durable steel, reducing material requirements without
compromising performance.
Beyond steel, molybdenum is used in catalysts, lubricants, and advanced materials for hydrogen
production, water purification, and other emerging clean technologies. Its thermal and structural
properties also make it valuable in defense and aerospace alloys.
Molybdenum is recognized as a critical mineral in Canada and increasingly monitored in global supply
chain risk assessments due to its strategic importance in industrial resilience and the energy transition.
Qualified Person
Mr. Nicholas Clive Aspinall, M.Sc., P.Eng., is a consulting geologist to Stuhini Exploration and is a
"qualified person" as defined by National Instrument 43-101. Mr. Aspinall has verified the data disclosed
in this press release, including the sampling, analytical and test data underlying the technical information,
and has approved the technical information contained herein.
About Stuhini Exploration Ltd.
Stuhini is a mineral exploration company focused on exploration and development of precious and base
metals properties in western Canada. The Company's portfolio of exploration properties includes the
flagship Ruby Creek Property, 16 km east of Atlin, BC; and the Big Ledge Property, 57 km south of
Revelstoke, BC.
For further information on Stuhini, visit our website at
www.stuhini.com
or contact:
Meredith Eades
President & CEO
604.360.4668
Twitter:
@STUexploration
LinkedIn:
Stuhini Exploration
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies
of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
Forward-Looking Statements
This news release contains "forward-looking statements" and "forward-looking information" (collectively,
"forward-looking statements") within the meaning of applicable Canadian securities laws. All statements
in this release that are not historical facts are forward-looking statements, including, without limitation:
statements regarding the engagement of Tetra Tech Canada Inc. ("Tetra Tech"); the objectives, scope,
and anticipated outcomes of Tetra Tech's conceptual-level economic assessment; advancing the
economic assessment of Ruby Creek and potential preparation of a PEA; the development potential of
the Ruby Creek molybdenum deposit; the interpretation of historical data, including drilling, metallurgical,
and environmental work; and the Company's broader strategy to unlock value through both development-
stage advancement and discovery.
Forward-looking statements are based on a number of assumptions believed by the Company to be
reasonable at the time of preparation, including, without limitation: that Tetra Tech's assessment will be
completed as planned and provide useful conclusions regarding the Ruby Creek deposit; that historical
data and geological interpretations are accurate and reliable; that current and forecasted molybdenum
prices and cost assumptions will remain within reasonable ranges; that sufficient funding and technical
resources will remain available to advance the project; and that no unforeseen regulatory, environmental,
or logistical challenges will arise.
Forward-looking statements are subject to a variety of known and unknown risks, uncertainties, and other
factors that may cause actual results to differ materially from those expressed or implied by such
statements. These risks include, but are not limited to: the risk that Tetra Tech's work may not be
completed as planned or may not provide positive conclusions; the preliminary and uncertain nature of
economic assessments; the possibility that exploration and development results may not support future
studies; changes in commodity prices and capital markets; regulatory and permitting delays; technical or
operational challenges; and broader market, geopolitical, or environmental conditions.
Although Stuhini believes the expectations expressed in such forward-looking statements are
reasonable, there can be no assurance that they will prove to be correct. Readers are cautioned not to
place undue reliance on these forward-looking statements, which speak only as of the date of this news
release. The Company undertakes no obligation to update or revise any forward-looking statements
except as required by applicable law.
1 Tetra Tech (formerly Wardrop Engineering Inc.), "Ruby Creek Feasibility Study" Document No. 0851760100-REP-R0002-01, prepared for Adanac
Molybdenum Corp., 2006.
2 "Technical Report, Ruby Creek Project, Northern British Columbia, Canada" effective March 10, 2022 and dated April 22, 2022 (the "Ruby Creek
Technical Report").
To view the source version of this press release, please visit
https://www.newsfilecorp.com/release/271256