Tiernan Advances Multiple Parallel Technical and Environmental Workstreams
Tiernan Advances Multiple Parallel Technical
and Environmental Workstreams
Vancouver, British Columbia--(Newsfile Corp. - May 14, 2026) -
Tiernan Gold Corp. (TSXV: TNGD)
("Tiernan" or the "Company") announces the initiation of a comprehensive suite of technical and
environmental studies in advancement of a Pre-Feasibility Study ("PFS") for its Volcan Gold Project (the
"Project" or "Volcan"), located in the Maricunga Gold Belt, Chile.
These initiatives build directly on the results of the recently completed core relogging program, which
confirmed that gold mineralization at Volcan is primarily controlled by veining and alteration intensity and
significantly strengthened the foundational geological framework for the Project's 9.8 million ounce
Measured and Indicated gold resource.
Strategically focused on the optimization of the Volcan Project, the Company has engaged purpose-
selected technical consultants and initiated multiple parallel workstreams in the following areas; each
critical to advancing Volcan through engineering and a filed Environmental Impact Assessment ("EIA").
Geology
Mining
Metallurgy
Environmental Baseline
Permitting
Highlights for studies underway include:
Ausenco
retained as lead PFS consultant, overseeing process engineering, environmental
baseline, and NI 43-101 Technical Report compilation
Deswik
engaged for open pit mine design and optimization, including trade-off analysis
SLR
retained to prepare an updated, geologically constrained Mineral Resource Estimate
("MRE") incorporating the recent relogging results
SGS
commissioned for a comprehensive metallurgical testwork program, expanded to 36
variability samples, covering full characterization, HPGR evaluation, and locked-cycle CIC/SART
testing
Gestión Ambiental Consultores
("GAC") retained for EIA consulting and environmental strategic
support, bringing 35+ years of SEIA experience including major Atacama Region mining projects
Three
meteorological, air quality and dust monitoring stations
successfully installed at site in
February 2026, following CONAF research permit approval - a key milestone for the environmental
permitting baseline
"These workstreams are a deliberate, coordinated de-risking sequence. The updated geologically
constrained resource estimate, the metallurgical testwork program, the mine design & trade-off
studies, and the installation of our environmental monitoring stations are each purpose-built to
support both the advancement of engineering and the EIA submission in parallel."
said Fausto Di
Trapani, President and Chief Executive Officer.
"The relogging program has given us a stronger
geological foundation; we are now translating that directly into engineering and environmental
baseline work."
PFS Study Team Assembled
Ausenco Chile Ltda. ("Ausenco") has been retained as lead PFS consultant for the Volcan Project,
responsible for integrating the multi-disciplinary study team and delivering the NI 43-101 Technical
Report summarizing the results of the engineering phase. Ausenco brings extensive experience as lead
consultant on large-scale open pit gold projects in Chile and South America and previously led the
Preliminary Economic Assessment ("PEA") completed for the Volcan Project in 2025.
Deswik Brasil ("Deswik") has been engaged to develop the mining component of the PFS, including a
trade-off analysis evaluating alternative locations for the waste rock dump and low-grade stockpile and a
comprehensive open pit mine evaluation covering pit optimization, mine design, scheduling, and capital
and operating cost estimation. Deswik brings deep expertise in open pit mine planning for large-
tonnage heap leach gold operations.
SLR Consulting (Canada) Ltd. ("SLR") has been retained to prepare an updated Mineral Resource
Estimate ("MRE"). The updated MRE will incorporate the recently completed core relogging program
results, including new lithological, structural, and alteration domain. This geologically constrained
approach is expected to improve confidence in continuity and grade estimation.
Comprehensive Metallurgical Testwork Program
SGS Canada Inc. ("SGS") has been commissioned to carry out a comprehensive metallurgical testwork
program for the Volcan Project. The program has been designed in consultation with Turnstone
Metallurgical and covers 36 variability samples. The program is structured in two phases:
Phase 1 - Characterization: Chemical analysis, mineralogical analysis by XRD, and diagnostic
leach testing across all 36 variability samples, providing a comprehensive dataset of metallurgical
variability across the deposit.
Phase 2 - Process Optimization: Coarse-ore bottle roll tests at varying crush sizes; high pressure
grinding rolls ("HPGR") versus conventional crushing comparison; carbon-in-column ("CIC")
adsorption testing; and a series of locked-cycle tests incorporating heap leach, CIC, and SART
(Sulphidization, Acidification, Recycling, and Thickening) circuits on composite samples.
The program will deliver a full suite of metallurgical tests designed to define and optimize gold recovery
and inform process design for the PFS.
Environmental Permitting Advancement - EIA Consulting
Tiernan has retained Gestión Ambiental Consultores SpA ("GAC") as its environmental consulting firm
to act as strategic advisors and support the Company's permitting roadmap for the Volcan Project. GAC
is one of Chile's leading environmental consultancies, with over 35 years of experience and more than
300 projects approved through Chile's Environmental Impact Assessment System ("SEIA"). GAC's track
record includes significant open pit mining projects in the Atacama Region, providing Tiernan with direct
relevant expertise in navigating Chile's rigorous environmental permitting framework.
This engagement is a critical step in advancing the Project's environmental permitting, which runs in
parallel with the technical PFS workstreams.
Environmental Baseline - Air Quality and Meteorological Monitoring
As part of the environmental baseline program supporting the Volcan EIA, Tiernan successfully installed
three meteorological, air quality and dust monitoring stations in February 2026. The stations were
installed following the receipt of a research permit from Corporación Nacional Forestal ("CONAF"). The
monitoring data will feed directly into the air quality and meteorological baseline required for the Volcan
EIA submission.
On behalf of Tiernan Gold Corp.
Fausto Di Trapani, CEO and Director
For further information visit
tiernangold.com
or contact:
Email:
Toll-free phone: +1 (888) 926-2591
About Tiernan Gold Corp.
Tiernan Gold Corp. is focused on the disciplined de-risking of the Volcan Gold Project strategically
located in the Atacama Region of Chile, on the Maricunga gold belt, a jurisdiction that has a long-
established history of mining with a number of operating mines, new mines under construction and major
projects being developed.
Cautionary Note Regarding Forward-Looking Information
This news release contains "forward-looking information" and "forward-looking statements" (together,
"forward-looking statements") within the meaning of applicable securities legislation. All statements,
other than statements of historical facts, are forward-looking statements. Often, but not always, forward-
looking statements can be identified by the use of words such as "plans", "planning", "expects", "is
expected", "continues", "budgets", "scheduled", "estimates", "forecasts", "predicts", "projects",
"potential", "intends", "targets", "aims", "seeks", "anticipates" or "believes" or variations (including
negative variations) of such words and phrases or may be identified by statements to the effect that
certain actions "may", "could", "should", "would", "might" or "will be taken", "occur" or "be achieved".
Forward-looking statements are subject to various known and unknown risks, future events, conditions,
uncertainties and other factors that may cause the actual results, performance or achievements to be
materially different from any future results, predictions, projections, forecasts, performance or
achievements expressed or implied by the forward-looking statements. Forward-looking statements in
this news release include, but are not limited to, statements with respect to the timing, scope, design and
results of the environmental impact study, engineering studies and permitting processes in connection
with advancement of the Project.
Forward-looking statements are based on several material expectations and assumptions made by the
Company's management, including but not limited to: the potential of the Project and the Company's
plans regarding the anticipated exploration and advancement of the Project; the ability of exploration
activities (including drilling) to accurately predict mineralization and the success of such exploration
activities and results; estimates of reserves and resources; anticipated costs (including future mining
and production rates) and estimates of capital and operating costs and other economics associated
with the Project; expectations concerning future metals prices and the demand, stability and market
outlook for metals, exchange rates, interest rates, tax laws and applicable royalty rates (if any); capital
efficiencies; the legislative and regulatory environment of Chile; expectations regarding the availability of
debt financing and the Company's ability to access capital on satisfactory terms; the Company's current
and future financial condition; anticipated timing, sufficiency and results of capital expenditures; the
potential for future metals production; and any other statements other than statements of historical facts.
Forward-looking statements are based on a number of assumptions and subject to a number of risks
and uncertainties, many of which are beyond the Company's control. Such risks and uncertainties
include, but are not limited to, the factors discussed under the heading "Risk Factors" in the Company's
filing statement dated December 8, 2025 filed under its issuer profile on SEDAR+ at
www.sedarplus.ca
.
There can be no assurance that such statements will prove to be accurate, as actual results and future
events could differ materially from those anticipated in such statements. Accordingly, readers should not
place undue reliance on forward-looking statements and forward-looking information. Readers are
cautioned that reliance on such information may not be appropriate for other purposes.
Forward-looking statements contained herein are made as of the date of this news release and the
Company disclaims any obligation to update or revise any forward-looking statements, whether as a
result of new information, future events or results or otherwise, except and as to the extent required by
applicable securities laws.
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