Oroco Commences Phase 2 Drilling
February 24, 2026 NEWS RELEASE
OROCO COMMENCES PHASE 2 DRILLING
VANCOUVER, Canada – (February 24, 2026) Oroco Resource Corp. (TSX-V: OCO, OTCQB:
ORRCF) (the “Company” or “Oroco”) is pleased to announce that it has mobilized a diamond drill rig
to its Santo Tomás copper project, located in northwestern Mexico, to commence drilling intended to
support the upgrade of the mineral resource classifications in the project’s South Zone.
This mobilization represents the practical start of Oroco’s Phase 2 on-site work program following
the Company’s recent financing led by Canaccord Genuity. Initial work will prioritize both infill
and confirmation drilling designed to refine the geological and grade model in areas where
increased drilling density is expected to support improved confidence for future mine planning and
engineering work. Additional drills will be added as required.
In parallel with the resource-classification drilling, Oroco will undertake complementary Pre-
Feasibility Study (“PFS”) programs intended to advance project engineering and reduce technical
risk. Those programs will include the following work:
• Hydrogeological, including collection of baseline and operational water data, targeted
hydrogeological testing where required, and integration of results into water management
planning;
• Geotechnical, including systematic geotechnical logging of drill core, core orientation and
structural data where appropriate, and the collection of parameters relevant to pit slope and
infrastructure design; and
• Metallurgical, including additional sample collection to support variability, comminution, and
process-response testing to a PFS standard.
Commenting on the mobilization, Oroco’s Chairman, Craig Dalziel stated: “The mobilization to the
South Zone at Santo Tomás marks the restart of a project that is not only of great value to the
shareholders of Oroco but is also essential to the future of a local community that, along with the
regional government, has been so supportive of the project. We are so very thankful to be located in
an area of Mexico where the potential benefits of the Santo Tomas Project are so widely appreciated.
We look forward to the many contributions, both local and federal, that the success at Santo Tomas is
likely to provide.”
ABOUT OROCO
Oroco’s focus is the development of its Santo Tomás Project in northwestern Mexico. The Company
holds a net 87.0% interest in the central concessions comprising 1,173 hectares (the “Core
Concessions”) and an 80% interest in additional surrounding concessions. On a consolidated basis,
the Santo Tomás land package has been the subject of an area rationalization process affecting one
non-core concession, resulting in a reduced overall project area.
Santo Tomás hosts significant porphyry copper mineralization initially defined by extensive prior
exploration (1968–1994), including over 100 diamond and reverse circulation drill hole s totaling
approximately 30,000 metres. Commencing in 2021, Oroco completed a Phase 1 drill program at Santo
Tomás totaling 48,481 metres in 76 diamond drill holes, which supported subsequent resource
estimation and engineering work, including a revised mineral resource estimate and updated PEA
published and filed in August 2024.
The Santo Tomás Project is located within 170 km of the Pacific deep-water port at Topolobampo and
is serviced via highway and proximal rail (along corridors of trunk grid power and natural gas) through
Los Mochis to the northern city of Choix.
For more information, please contact:
Craig Dalziel, Chairman
Oroco Resource Corp.
Tel: 604-688-6200
Email: [email protected]
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the
policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this
release.
Cautionary Note Regarding Forward-Looking Information
This news release includes certain “forward -looking information” and “forward-looking
statements” within the meaning of applicable Canadian securities legislation. Forward -looking
statements include, but are not limited to, statements regarding the timing and scope of drilling, the
addition of drill rigs, the objectives and expected outcomes of resource-classification drilling, the
completion and results of PFS-level hydrogeological, geotechnical and metallurgical programs, and
the Company’s plans to advance Santo Tomás. Forward -looking statements are based o n
management’s expectations and assumptions as of the date hereof and are subject to known and
unknown risks and uncertainties that may cause actual results to differ materially. Readers are
cautioned not to place undue reliance on forward-looking statements. Oroco does not undertake to
update forward-looking statements except as required by law.