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Initial Drilling to Assess Potential for Open Pit Production Intersects High-Grade Gold in the Jubilee Shear

Initial Drilling to Assess Potential for Open Pit Production Intersects High-Grade Gold in the Jubilee Shear

Yahoo12-05-2025

Initial near-surface drilling intersects wide zone of alteration containing 14.51 g/t Au over 4.81 m including 90.40 g/t Au over 0.67 m
TORONTO, May 12, 2025 (GLOBE NEWSWIRE) -- Red Pine Exploration Inc. (TSXV: RPX, OTCQB: RDEXF) ('Red Pine' or the 'Company') is pleased to announce initial results of its near-surface drilling program focused on evaluating the potential of an open pit operation in two areas of the Jubilee Shear (See press release announced May 8, 2025). This drilling is a portion of the ongoing, fully funded 25,000 metres ("m") drill program at the Wawa Gold Project, Ontario.
Highlights
Near-surface intersection of 14.51 grams per tonne ("g/t") gold ("Au") over 4.81 m, including 90.40 g/t Au over 0.67 m, at the edge of the 2024 Mineral Resource Estimate1 (the '2024 MRE') within an area for consideration for a potential open-pit operation;
More than 14 drill holes are ongoing in the shallow part of the Jubilee Shear with results pending;
Several high-grade gold intersections > 5.00 g/t Au at depth in the Jubilee Shear located hundreds of meters away from the 2024 MRE, are indicative of the potential for future growth to the mineral resource.
Drilling at depth continues to identify key geological vectors towards potential zones of strong gold mineralization in the Jubilee Shear:
Includes the identification of a new gabbro dyke interpreted to represent a key geological control on the Jubilee Shear at depths similar to the gabbro dykes controlling the distribution of gold mineralization near surface; and
Outlines new exploration targets at depths in the Jubilee Shear in the Cooper Mine area.
The focus of the drilling is to build out the near surface resource to complete an updated MRE and a Preliminary Economic Assessment by H1 2026.
Michael Michaud, President and CEO of Red Pine commented: 'We are excited that our initial near-surface drilling has already intersected wide zones of alteration, quartz veining and significant gold grades. This drilling is designed to not only improve our confidence in the gold distribution, but also to expand gold mineralization in this relatively underexplored area. This drilling is the first step in assessing the potential of a near-term open pit operation that would provide an incremental approach to move towards a larger operation to mine the existing open-pit and underground mineral resource base outlined in the 2024 MRE.
We are also pleased with the positive results from deeper drilling as we continue to gain more knowledge on the geology and the potential to intersect gold mineralization in large step-outs from the 2024 MRE. Of importance, we have now intersected a gabbro unit at depth that is known to be a critical control on mineralization as identified closer to surface where we have already defined a large open-pit and underground resource.
The Company intends to update the 2024 MRE with the completion of the drilling program, with the objective to concurrently work towards a preliminary economic assessment ('PEA'), anticipated for completion in H1 2026."
1The MRE is described in the National Instrument 43-101 Technical Report dated September 30, 2024 (with a mineral resource effective date of August 28, 2024) entitled 'National Instrument 43-101 Technical Report for the Wawa Gold Project' (the '').
Ongoing Drilling Program
Red Pine is currently drilling with 2 rigs and completed approximately 65% of the fully funded 25,000 m exploration program. The ongoing drilling at depth continues to intersect gold mineralization with large step outs designed to expand the mineral resource base. In parallel, near-surface testing of the Jubilee Shear has started in two areas identified as having high potential for open-pits within the near-surface portion of the 2024 MRE.
The near-surface drilling program consists of closely spaced drill holes aiming to increase confidence in the 2024 MRE and extend gold mineralization within the crown pillar of the former Surluga and Jubilee mines where historic drilling was limited. Between 8,000 and 9,000 m of drilling is allocated to evaluate the two areas and is expected to take 3 months to complete.
Near-Surface Drill Testing of the Jubilee Shear for Potential Open-Pit Operation (Tables 1 and 2 and Figures 1 to 3):
In addition to the strong results obtained in SD-25-552, previous drilling supports the potential of the areas considered for potential open-pits (Figure 1). Significant historical results included in the 2024 MRE in each area include:
Northern Area
4.40 g/t Au over 9.61 m, including 38.74 g/t Au over 0.77 m and 28.80 g/t Au over 0.31 m in historical drill hole S073
13.24 g/t Au over 4.69 m, including 18.64 g/t Au over 3.17 m in historical drill hole S063
Jubilee Mine Area
4.42 g/t Au over 18.99 m, including 40.20 g/t Au over 1.00 m in SD-17-172
9.62 g/t Au over 14.93 m, including 12.47 g/t Au over 1.83 m, 24.14 g/t Au over 0.91 m and 81.12 g/t Au over 0.91 m in historical drill hole S240
Jubilee Deep Drilling (Tables 1 and 2 and Figure 2):
Deep drilling in the Jubilee Shear that consists of large step-outs from the 2024 MRE, continues to uncover indications of high-grade gold mineralization at depth and is vectoring towards new zones of high-grade gold mineralization. Additional drill testing of the deeper extension of the Jubilee Shear is planned to continue in parallel with the drill testing of the near-surface extension of the Jubilee Shear.
Key highlights of the deep drilling in the Jubilee Shear include:
Multiple intersections greater than 5.00 g/t Au indicating that mineralization extends beyond the 2024 MRE (including the drilling results announced on February 19 and March 20, 2025):
Additional drilling will be necessary to infill the gaps between the widely spaced drill holes completed to date to find areas of thickening of the high-grade core of the Jubilee Shear.
Identification of a new gabbro dyke at depth west of the Jubilee Shear in relation to the roll discussed in the February 19 and March 20, 2025 press releases:
Wide gabbro intersections in SD-25-536 and SD-540 below the Main Deformation Zone of the Jubilee Shear interpreted to represent a new gabbro dyke
In the shallower parts of the Jubilee Deposit, the main zones of mineralization forming the 2024 MRE are distributed above and below such gabbro dyke
Gabbro dykes are a key geological control on the location of rolls which are areas where the dip of the shear zone changes that can correspond to zones of thickening of mineralization in the shears of the Wawa Gold Project
Mineralogical transition from white-mica dominated to chloritized-biotite alteration haloes around the strongly deformed veins in the Jubilee Shear. In other deposits of the Michipicoten Greenstone Belt, that mineralogical transition is an indicator that the gold system is changing and that this can result in positive changes in the nature of the gold mineralization zones.
Table 1 Drilling results from the 2024-2025 drilling program
Hole(#)
From(m)
To(m)
Length(m)*
Gold(g/t)
Zone(name)
SD-25-533
658.88
659.68
0.80
2.24
Jubilee Shear - Main
672.00
673.09
1.09
5.01
SD-25-535
211.46
213.00
1.54
7.23
Vein Network
SD-25-536A
968.00
969.06
1.06
2.56
Jubilee Shear - Main
SD-25-538
741.00
742.00
1.00
5.32
Jubilee Shear - Upper
788.32
798.31
9.99
1.95
Jubilee Shear - Main
including
795.20
796.40
1.20
8.50
SD-25-539
93.80
95.56
1.76
3.00
Mickelson Vein Network
480.34
483.61
3.27
2.92
Jubilee Shear - Main
Including
481.43
483.61
2.18
4.12
643.50
644.78
1.28
3.96
SD-25-552
64.64
69.45
4.81
14.51
Jubilee Shear - Main
Including
65.75
66.42
0.67
90.40
67.27
68.12
0.85
7.93
*Intercepts are calculated using a 0.40 g/t Au cut-off and a maximum of 6.0 m of internal dilution with no capping applied and are reported over core lengths. True widths are estimated to vary between 70 to 95% of the reported core length in the Jubilee and undefined in the vein networks. The reported assay results represent 4,614.23 m of assayed core from the 2025 drilling program in the extension at depth of the Jubilee Shear and 16.88 m from near-surface drilling in the Northern Area for consideration for Phase 1 open-pits.
Quality Assurance/Quality Control ("QA/QC") Measures
Individual drill core samples are labelled and split in half along a pre-marked cutting line using a diamond saw. A consistent half-core sample is then placed in an individual plastic sample bag that is sealed. The remaining half-core samples are kept at the core storage facility of the Company located on the Wawa Gold project. Quarter-core duplicates are taken from certain samples to define the variability of gold distribution. Groups of samples are then placed into durable rice bags sealed with security seals to be transported using a commercial carrier for analysis to Actlabs in Ancaster, Ontario. NQ core assays were obtained by 50-gram fire-assaying-AA finish or by 1-kilogram screen fire assay. The 1-kilogram screen assay method is selected for samples anticipated to contain coarse gold and when the fire-assay-AA finish return results greater or equal to 2.25 g/t Au. The residual coarse reject portions of the samples remain in storage for a minimum 90-day period if further work or verification is needed.
As part of its QA/QC program, Red Pine inserts external gold standards (low- to high-grade) and blanks every 20 samples and routinely insert blanks immediately after samples with visible gold. Quarter core duplicates are routinely inserted to evaluate the natural variability of gold mineralization. Assay certificates are sent to at least three members of the senior management team, and they are directly accessible from the WebLIMS portal of Actlabs. Approximately 5% of the pulps and coarse rejects analyzed at Actlabs are sent to Agat Laboratories in Thunder Bay for umpire testing.
Table 2 – Drill hole location
Hole(#)
UTM E(m)
UTM N(m)
Elevation(masl)
Azimuth(°)
Inclination (°)
Length(m)
Assays Status
Area
SD-25-533
668713
5314807
346.0
303.0
60.1
873.0
Complete
Jubilee Deep
SD-25-534A
668713
5314807
346.0
303.0
60.1
1116.0
Complete
Jubilee Deep
SD-25-535
668859
5315950
370.5
267.0
70.0
841.0
Complete
Jubilee Deep
SD-25-536A
668713
5314807
346.0
300.0
66.0
1149.0
Complete
Jubilee Deep
SD-25-537
668859
5315950
370.5
300.0
65.3
785.0
Complete
Jubilee Deep
SD-25-538
668708
5315808
370.0
218.0
73.1
858.0
Complete
Jubilee Deep
SD-25-539
668582
5315801
368.5
323.0
70.9
696.0
Complete
Jubilee Deep
SD-25-540
668922
5315725
353.3
240.0
70.4
1002.0
Pending
Jubilee Deep
SD-25-541
668219
5317008
359.6
295.0
45.2
390.0
Pending
Northern area
SD-25-542
668258
5317118
364.0
295.0
45.2
399.0
Pending
Northern area
SD-25-543
668283
5317185
359.3
302.0
45.0
57.0
Pending
Northern area
SD-25-544
668267
5317163
362.0
302.0
45.0
162.0
Pending
Northern area
SD-25-545
668562
5315305
370.8
283.0
83.2
1033.0
Pending
Jubilee Deep
SD-25-546
668233
5317053
363.9
295.0
49.2
150.0
Pending
Northern area
SD-25-547
668289
5317260
346.6
290.0
47.3
126.0
Pending
Northern area
SD-25-548
668328
5317385
371.3
290.0
45.2
264.0
Pending
Northern area
SD-25-549
668363
5317459
375.1
290.0
45.0
135.0
Pending
Northern area
SD-25-550
668362
5317460
375.3
290.0
45.0
135.0
Pending
Northern area
SD-25-551
668362
5317460
375.3
290.0
89.1
132.0
Pending
Northern area
SD-25-552
668331
5317415
373.8
290.0
45.2
135.0
Partial
Northern area
SD-25-553
668331
5317415
373.8
290.0
70.1
141.0
Pending
Northern area
SD-25-554
668331
5317415
373.8
110.0
85.0
132.0
Pending
Northern area
SD-25-555
668344
5317441
374.9
290.0
45.0
148.0
Pending
Northern area
Qualified Person
Jean-Francois Montreuil, P.Geo. and Vice President, Exploration of Red Pine and the Qualified Person, as defined by National Instrument 43-101, has reviewed and approved the technical information contained in this news release.
About Red Pine Exploration Inc.
Red Pine Exploration Inc. is a gold exploration company headquartered in Toronto, Ontario, Canada. The Company's shares trade on the TSX Venture Exchange under the symbol "RPX" and on the OTCQB Markets under the symbol 'RDEXF'.
The Wawa Gold Project is in the Michipicoten Greenstone Belt of Ontario, a region that has seen major investment by several producers in the last five years. The Company's land package hosts numerous historic gold mines and is over 7,000 hectares in size. Red Pine is building a strong position as a major mineral exploration and development player in the Michipicoten region.
For more information about the Company, visit www.redpineexp.com
Or contact:
Michael Michaud, President and Chief Executive Officer, at (416) 364-7024 or mmichaud@redpineexp.com
Or
Manish Grigo, Director of Corporate Development, at (416) 569-3292 or mgrigo@redpineexp.com
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.
Cautionary Note Regarding Forward-Looking Information
This news release contains statements which constitute 'forward-looking information' within the meaning of applicable securities laws, including statements regarding the plans, intentions, beliefs and current expectations of the Company with respect to future business activities and operating performance.
Forward-looking information is often identified by the words 'may', 'would', 'could', 'should', 'will', 'intend', 'plan', 'anticipate', 'believe', 'estimate', 'expect' or similar expressions. Forward-looking information contained in this news release includes, but may not be limited to, statements regarding the potential of developing an early stage open-pit operation; the potential of further growth to the 2024 MRE; the Company updating the 2024 MRE and completing a PEA in H1 2026; drilling allocated to evaluating two areas for a potential open-pit operation taking 3 months to complete; additional drill testing of the deeper extension of the Jubilee Shear is planned to continue in parallel with the drill testing of the near-surface extension of the Jubilee Shear; additional drilling being necessary to infill the gaps between the widely spaced drill holes completed to date to find areas of thickening of the high-grade core of the Jubilee Shear; and that alteration related to gold mineralization in the new shoot appears to transition from white mica-dominated to chloritized biotite-dominated which is often associated with higher grades. Investors are cautioned that forward-looking information is not based on historical facts but instead reflects management's expectations, estimates or projections concerning future results or events based on the opinions, assumptions and estimates of management considered reasonable at the date the statements are made. Such opinions, assumptions and estimates are inherently subject to a variety of risks and uncertainties that could cause actual events or results to differ materially from those projected and undue reliance should not be placed on such information, as unknown or unpredictable factors could have material adverse effects on future results, performance or achievements. Among the key factors that could cause actual results to differ materially from those projected in the forward-looking information are: the Company's expectations in connection with the projects and exploration programs being met, the impact of general business and economic conditions, global liquidity and credit availability on the timing of cash flows and the values of assets and liabilities based on projected future conditions, fluctuating gold prices, currency exchange rates (such as the Canadian dollar versus the United States Dollar), variations in ore grade or recovery rates, changes in accounting policies, changes in the Company's mineral reserves and resources, changes in project parameters as plans continue to be refined, changes in project development, construction, production and commissioning time frames, the possibility of project cost overruns or unanticipated costs and expenses, higher prices for fuel, power, labour and other consumables contributing to higher costs and general risks of the mining industry, failure of plant, equipment or processes to operate as anticipated, unexpected changes in mine life, seasonality and weather, costs and timing of the development of new deposits, success of exploration activities, permitting time lines, government regulation of mining operations, environmental risks, unanticipated reclamation expenses, title disputes or claims, and limitations on insurance.
This information contained in this news release is qualified in its entirety by cautionary statements and risk factor disclosure contained in filings made by the Company, including the Company's financial statements and related MD&A for the year ended July 31, 2024, and the interim financial reports and related MD&A for the period ended January 31, 2024, April 30, 2024, October 31, 2024 and January 31, 2025, filed with the securities' regulatory authorities in certain provinces of Canada and available at www.sedarplus.ca.
Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward-looking information prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated, believed, estimated or expected. Although the Company has attempted to identify important risks, uncertainties and factors which could cause actual results to differ materially, there may be others that cause results not to be as anticipated, estimated or intended. The Company does not intend, and does not assume any obligation, to update this forward-looking information except as otherwise required by applicable law.
Figure 1 - 3D view showing conceptual pits, select previous drilling and existing underground workings.Figure 2 - Longitudinal view of Jubilee Shear showing the interpreted steeper plunging zones of overlying quartz veins that have enriched the shallow, south plunging shoot / gabbro. The intersected gabbro at depth is interpreted to be similar to the gabbro closer to surface that provides control on the gold mineralization.Figure 3 – A and B) Photographs of SD-25-552 showing the zone of strong alteration, quartz veining and mineralization in the Jubilee Shear with B) a close view of the high-grade quartz vein. C) Variably sheared and veined gabbro dyke identified at depth below the Jubilee Shear in SD-25-540. The core pictures are from NQ-sized drill core with a diameter of 47.6 mmPhotos accompanying this announcement are available at:https://www.globenewswire.com/NewsRoom/AttachmentNg/dc3b1f3c-714d-4d41-9faa-f9220db4faee
https://www.globenewswire.com/NewsRoom/AttachmentNg/3eeb39b6-5e38-473d-9889-056fb1f4321a
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About RESPEC RESPEC is an International group that applies engineering, applied sciences and technology to natural resources and has extensive experience in the Mineral and Exploration industry throughout Nevada and the western United States. RESPEC was founded in 1969 with over 600 employees and over USD $112 Million in Revenue (2022). 2025 Phase 1 Drill Program In 2024 and 2025 a total of seven drill holes, MHB-30 through MHB-36, have been completed for a combined 7,370.5 feet (2,246.53 meters) of core drilling. This brings the cumulative total of drilling at Majuba Hill to 89,395 feet (27,247.5 meters), which will significantly enhance the Company's geological model and understanding of the mineralization. Table 1: Majuba Hill 2024 and 2025 Drill Program Collar Details The primary objective of the 2025 Core Program was to step out from and expand the known zones of copper mineralization and advance the Majuba Hill Project toward completing a mineral resource estimate. All drill core was transported to Giant Mining's secure core facility in Elko, Nevada, where it was logged, sawn, and sampled by Company personnel. The samples were submitted to ALS Global Services ("ALS Labs") for geochemical analysis, with sample preparation completed at their Elko facility and final assaying conducted at their laboratory in Vancouver, British Columbia. Key highlights include: MHB-30 (September 24, 2024 news release) High-grade copper was sampled from core hole MHB-30 ("MHB-30") that was clearly associated with magmatic-hydrothermal, copper-bearing breccia zone. The breccia zone assays returned: 218.0 feet of 1.35% Cu and 73.4 g/t Ag from 0 to 218 feet (0-66.4 m) including 74.0 feet (22.6 meters) at 2.6% Cu and 30.1 g/t Ag Table 2: MHB-32 Significant Assay Intervals for assays reported to date. (*True widths are unknown.) MHB-32 MHB-32 intersected two significant copper mineralized zones within a broader interval of 379.5 feet (115.7 m) grading 0.33% Cu and 16.97 ppm Ag, from 510 to 889.5 feet (155.5 to 271.1 m). These results extend the known mineralization deeper and further north than previous drilling. The two key intervals, detailed in Table 2, are: 85 feet (25.9 m) at 0.64% Cu and 50.89 ppm Ag from 510 to 595 feet (155.5 to 181.4 m) 169.5 feet (51.7 m) at 0.41% Cu and 9.51 ppm Ag from 720 to 889.5 feet (219.5 to 271.1 m), including: 40 feet (12.2 m) at 1.36% Cu and 13.33 ppm Ag from 780 to 820 feet (237.7 to 249.9 m), containing a higher-grade section of: 10 feet (3.0 m) at 4.36% Cu and 35.65 ppm Ag from 805 to 815 feet (245.4 to 248.4 m) Core Hole MHB-32 was completed to a total depth of 889.5 feet (271.1 meters). The hole intersected copper-bearing, magmatic-hydrothermal breccias with secondary copper minerals, including azurite, malachite, and chalcocite. These transitioned into strongly oxidized copper sulfides, along with primary, unoxidized chalcopyrite near the bottom of the early success confirmed the vertical continuity of the mineralized system and the presence of breccia-hosted copper 34 Native Copper Encounter Core Hole MHB-34 was drilled to a total depth of 1,963 feet (598.3 meters). The hole encountered persistent native copper, cuprite, and chalcopyrite mineralization in the deeper sections, with native copper observed beyond 1,850 visual results indicate a robust enrichment zone related to a porphyry system at depth and suggest proximity to a primary copper sulfide source. MHB 36 An A.I. Driven Step Out Discovery or Potential Deposit Extension The fifth and final drill hole of the Core Program, MHB-36, was planned for a total depth of 1,000 feet (304.8 meters). This hole was designed by Exploration Technologies ("ExploreTech") using its proprietary AI-assisted geophysical modeling system to test a high-potential resistivity anomaly delineated in the southern sector of the Majuba Hill project area. The AI-driven targeting approach aimed to identify geologically favorable zones with potential for new copper mineralization beyond the existing mineralization to the intersection of the sulfides predicted by modeling the hole was extended to 1100 feet (335.28 meters). MHB-36 intersected disseminated and vein-hosted chalcopyrite mineralization within intrusive and magmatic hydrothermal breccias, beginning at a downhole depth of 650 feet (198 meters). Mineralization was observed intermittently beyond 905 feet (274.32 meters), confirming the accuracy of the AI model and highlighting the potential for further extensions of copper-bearing zones in this underexplored Hill's critically important characteristics are as follows: Location: Nevada, USA - a globally top-ranked mining jurisdiction, ranked #1 in the Fraser Institute's 2022 Annual Survey of Mining Companies. Project Size: 9,684 Acres Infrastructure: The Majuba Hill property is 113 road km (70 miles) southwest of Winnemucca, Nevada, and 251 km (156 miles) northeast of Reno. Access is by well-maintained county roads from the Imlay, Nevada exit on U.S. Interstate 80, and traveling westward 23 miles. People, Roads, Power and Water are the basic elements when considering infrastructure and Majuba Hill already has a solid infrastructure foundation for building a large facility which will provide significant savings compared to more remote projects History: Historical Producer Drilling: Approximately 89,395 feet of drilling to date. Rough replacement value of drilling USD $12.1 Million using current costs. Mineralization: The project shows indications of a potentially large Cu Ag +/- Au mineralized body with many features in common with both large porphyry copper, silver, and gold projects. Expandability: The IP survey, deep drilling, and step-out drilling indicate significant expansion potential, with mineralization open in all directions. Fully Financed: Secured funding for next phase of drilling at Majuba Hill Quality Assurance/Quality Control ("QA/QC") Measures, Chain of Custody The Company utilizes a QA/QC program using best industry practices at the Majuba Hill Project. The samples are placed in cloth sample bags and are transported from the Giant Mining secure warehouse to the ALS Labs Sample Prep Facility in Elko, Nevada. ALS Labs then securely transports the prepared pulps to their analytical lab in North Vancouver, B.C. Drill core samples are sawn in half lengthwise and one half is placed in labeled cloth sample bags. All samples are analyzed for copper, gold, silver, and 33 other elements. Gold is determined by ALS Labs method Au-AA23 which is a fire assay with an AAS finish on a 30-gram split. Copper, silver, and the remaining 31 elements are determined by ALS Labs method ME-ICP61 which is a four-acid digestion and ICP-AES assay. Approximately 5% of the submitted samples are drill duplicates and copper-gold-porphyry commercial standard reference material pulps. The remaining pulps will be retrieved from ALS Labs. Qualified Person The scientific and technical information contained in this news release has been reviewed and approved by E.L. "Buster" Hunsaker III, CPG 8137, a non-independent consulting geologist who is a "Qualified Person" as such term is defined under National Instrument 43-101 Standards of Disclosure for Mineral Projects (). About Giant Mining Corp. Giant Mining is focused on identifying, acquiring, and advancing late-stage copper and copper/silver/gold projects to meet the growing global demand for critical metals. This demand is driven by initiatives like the Green New Deal in the United States and similar climate-focused programs worldwide, which require substantial amounts of copper, silver, and gold for electric vehicles, renewable energy infrastructure, and the modernization of clean and affordable energy systems. The Company's flagship asset is the Majuba Hill Copper, Silver, and Gold District, located 156 miles (251 km) from Reno, Nevada. Majuba Hill is situated in a mining-friendly jurisdiction with supportive regulations and has the potential to become one of the next major copper deposits, critical for meeting the increasing need for this red metal. Neither the Canadian Securities Exchange nor its Market Regulator (as that term is defined in the policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release. On Behalf of the Board of Giant Mining Corp. "David Greenway"David C. GreenwayPresident & CEO For further information, please contact:E: info@ 1 (236) 788-0643 Instagram, Facebook, Twitter, LinkedInThis news release contains certain forwardlooking information. Such information involves known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from those implied by statements herein, and therefore these statements should not be read as guarantees of future performance or results. All forwardlooking statements are based on the Company's current beliefs as well as assumptions made by and information currently available to it as well as other factors. Readers are cautioned not to place undue reliance on these forwardlooking statements, which speak only as of the date of this press release. Due to risks and uncertainties, including the risks and uncertainties identified by the Company in its public securities filings, actual events may differ materially from current expectations. The Company disclaims any intention or obligation to update or revise any forwardlooking statements, whether as a result of new information, future events or otherwise.

Defence Therapeutics Receives USPTO Allowance for Patent Application Covering Next-Gen ADC Technology
Defence Therapeutics Receives USPTO Allowance for Patent Application Covering Next-Gen ADC Technology

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Defence Therapeutics Receives USPTO Allowance for Patent Application Covering Next-Gen ADC Technology

Montreal, Quebec--(Newsfile Corp. - June 9, 2025) - Defence Therapeutics Inc. (CSE: DTC) (OTCQB: DTCFF) (FSE: DTC) ("Defence" or the "Company"), a leading biotechnology company specializing in drug delivery technologies, is pleased to announce that the United States Patent and Trademark Office (USPTO) has issued a Notice of Allowance for its U.S. patent application covering one of its next-generation antibody-drug conjugate (ADC) technologies. The allowance of U.S. patent application no. 18/351,291 ('291) includes valuable composition-of-matter claims broadly covering therapeutically active ADCs - not limited to individual diseases or therapeutic targets - as well as claims covering the use of ADCs for treating or diagnosing diseases such as cancer. Defence's Accum®-based ADCs have demonstrated enhanced intracellular delivery and cytotoxic activity in multiple preclinical cancer models compared to conventional ADCs. Upon grant, the '291 patent application will provide the Company with potential market exclusivity until 2043 for its proprietary second-generation Accum®-based ADCs, which include antibodies conjugated to innovative new constructs featuring a bile acid conjugated to a nuclear localization signal (NLS) derived from the ribosomal protein eS17 (RPS17). This milestone builds on Defence's established patent portfolio for its foundational Accum® technology, which includes granted patents in the United States (US 11,352,437), Japan (JP 7,126,956), Australia (AU 2017233725), and Israel (IL 261765), with applications currently pending in Canada and Europe. "Second-generation Accum®-based ADCs represent a significant advancement in both oncotherapy and targeted drug delivery," said Sébastien Plouffe, CEO and Founder of Defence Therapeutics. "This recent allowance underscores the innovation and versatility embedded in our ADC platform technology and reflects our commitment to developing novel, effective cancer treatments that push the boundaries of current ADC technologies." This newly allowed U.S. patent application is poised to become the eighth granted U.S. patent in Defence's expanding portfolio, which now comprises seven published patent families. About Defence: Defence Therapeutics is a publicly-traded clinical-stage biotechnology company developing and engineering the next generation of ADC products using its proprietary platform. The core of Defence Therapeutics platform is the ACCUM® technology, which enables precision delivery of ADCs in their intact form to target cells. As a result, increased efficacy and potency can be reached against cancer. For further information:Sebastien Plouffe, President, CEO and DirectorP: (514) 947-2272Splouffe@ Cautionary Statement Regarding "Forward-Looking" Information This release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts, that address events or developments that the Company expects to occur, are forward-looking statements. Forward-looking statements are statements that are not historical facts and are generally, but not always, identified by the words "expects", "plans", "anticipates", "believes", "intends", "estimates", "projects", "potential" and similar expressions, or that events or conditions "will", "would", "may", "could" or "should" occur. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results may differ materially from those in the forward-looking statements. Factors that could cause the actual results to differ materially from those in forward-looking statements include regulatory actions, market prices, and continued availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and actual results or developments may differ materially from those projected in the forward-looking statements. Forward-looking statements are based on the beliefs, estimates and opinions of the Company's management on the date the statements are made. Except as required by applicable securities laws, the Company undertakes no obligation to update these forward-looking statements in the event that management's beliefs, estimates or opinions, or other factors, should change. Neither the CSE nor its market regulator, as that term is defined in the policies of the CSE, accepts responsibility for the adequacy or accuracy of this release. To view the source version of this press release, please visit Error in retrieving data Sign in to access your portfolio Error in retrieving data Error in retrieving data Error in retrieving data Error in retrieving data

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