St. Augustine Gold and Copper Limited Advances Kingking Project to Definitive Feasibility Study and Engages Consulting Engineering Firms
St. Augustine Gold and Copper Limited Advances Kingking Project to Definitive
Feasibility Study and Engages Consulting Engineering Firms
Manila, Philippines – October 9, 2025 – St. Augustine Gold and Copper Limited (TSX: SAU)
(“St. Augustine” or the “Company”) is pleased to announce the engagement of Stantec
Consulting Ltd. (“Stantec”) and Independent Mining Consultants, Inc. (“IMC”) to complete a
Definitive Feasibility Study (DFS) for the Kingking Copper-Gold Project in Pantukan, Davao
de Oro, Philippines. This follows the highly positive results of the Pre-Feasibility Study (PFS)
released on July 31, 2025, which delineated the project’s world-class economic potential and
supports an expedited path to production.
Robust Pre-Feasibility Economics
The July 2025 PFS highlights the Kingking Project’s exceptional financial metrics (based on
$4.30/lb. copper and $2,150/oz gold), positioning it as one of the largest undeveloped
copper-gold deposits globally:
Post-tax NPV (7%): $4.18 billion
Post-tax IRR: 34.2%
Payback Period: 1.9 years
Initial Capital Estimate: $2.37 billion
After-tax Benefit-Cost Ratio: 1.8
Reserve Estimate: 960 million tonnes, including 849 million tonnes of Proven and
Probable Milling Reserves and 111 million tonnes of Proven and Probable Leaching
Reserves
Proven and Probable Mineral Reserves of 5.40 million pounds of contained copper and
9.77 million ounces of contained gold.
The PFS outlines a 31-year mine life with an additional seven years of low grade or
stockpile milling. Processing will support a 100,000 tonne per day mine delivery schedule
supported by 60,000 tpd milling and 40,000 tpd heap leach. Average annual production in
the first five years is projected at 129,000 tonnes of payable copper (cathode and
concentrate) and 333,000 ounces of payable gold (concentrate and Doré). The total
consolidated net cash cost of $0.73 per pound of copper during the first five years further
enhances the project economics.
Advancing to Definitive Feasibility Study
Following the PFS results, the St. Augustine Board of Directors has approved advancement
to Definitive Feasibility on an accelerated timeline for production. Stantec, as the lead
engineering firm, will oversee the DFS, ensuring compliance with NI 43-101 and the
Philippine Mining Act of 1995 (RA 7942). IMC will focus on mine planning, resource
estimation, and modeling, working in close coordination with Stantec. The planned
completion of the DFS is Q4 2026. The DFS will optimize key recommendations from the
PFS, including:
Implementation of chloride leach to enhance copper recovery from low-grade
sulfide stockpiles early in mine life.
Improved crushing/grinding circuit efficiency for levelized throughput leveraging
total plant capacity.
Increased throughput to potentially reduce the mine life to approximately 21-25
years.
Process flowsheet evaluation to increase gold and copper recoveries.
Stantec will also develop the Project Execution Plan, the EPCM bid package, and long-lead-
time materials and equipment list and procurement plan. The DFS will be managed by
Stantec’s Brisbane, Perth, and Chandler, Arizona offices, with IMC operating from Tucson,
Arizona.
Strategic Outlook
“The Kingking Project’s outstanding economics, as demonstrated in the PFS, provide a
strong foundation for advancing to the DFS phase,” said Andy Russell, Project Director for
the Kingking project. “With Stantec`s and IMC’s expertise, along with the excellent St
Augustine management team, we are well-positioned to optimize the project and move
toward production on an expedited schedule, delivering significant value to our shareholders
and stakeholders in the Philippines.” noted Mike Regino, St. Augustine Chief Operating
Officer.
About St. Augustine Gold and Copper Limited
St. Augustine Gold and Copper Limited (TSX: SAU) is focused on the development of the
Kingking Copper-Gold Project, a major copper-gold deposit in the Philippines. The
Company is committed to the ICMM standards for sustainable development and creating
value for its stakeholders through responsible mining practices.
For further information, please contact:
Nicolaos Paraskevas
Email: [email protected]
phone: +632 77288491
Website: https://www.sagcmining.com
NATIONAL INSTRUMENT 43-101 COMPLIANCE
The following Qualified Person under National Instrument 43-101 ("NI 43-101") has
reviewed and approved of the scientific, technical, and economic information contained in
this news release: James Moore, P.E. of Met Engineering.
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
All statements, other than statements of historical fact included herein are forward looking
statements. Forward-looking statements involve various risks and uncertainties and are based on
certain factors and assumptions. While we consider these assumptions to be reasonable based on
currently available information, they may prove to be incorrect. There can be no assurance that
such statements will prove to be accurate, and actual results and future events could differ
materially from those anticipated in such statements. Forward-looking information is also subject to
certain factors, including risks and uncertainties, that could cause actual results to differ materially
from the Company’s current expectations, including changes in market conditions, governmental or
regulatory developments, changes in metal prices, regulatory approvals, and technical challenges.
and general economic conditions. Other risks and uncertainties related to the Company are
disclosed under the heading “Risk Factors” in the Company’s Annual Information Form dated March
31, 2025 and filed with Canadian securities regulatory authorities on the SEDAR+ website
atwww.sedarplus.ca. Forward-looking information contained in this announcement is based on our
current estimates, expectations and projections, which we believe are reasonable as of the current
date. You should not place undue importance on forward-looking information and should nor rely
on this information as of any other date. While we may elect to, we are under no obligation
and do not undertake to update this information except as required by applicable securities law.