Defense Metals Resource Upgrade Drilling Intersects 2.33% TREO over 153 Metres at the Wicheeda Rare Earth Project

Western pit-wall drilling exceeded predicted grades in six of seven holes, while southern-area assays averaged 76% of predictions.

Rhea-AI Summary

Defense Metals (DFMTF) reported final Wicheeda drilling assays, including an interval grading 2.33% total rare earth oxides over 153.2 metres. The results cover ten spring 2026 core holes totalling 1,702 metres at its wholly owned project near Prince George, Canada. Hole WI26-104 delivered the campaign's highest grade-times-width intercept, with assays 34% above predicted inferred-resource block model grades.

Across 19 resource-upgrade holes totalling 2,887 metres, assays averaged 87% of predicted grades. Southern-area assays averaged 76% of predictions, reflecting a local 20-metre northward shift in the mineralized contact. Along the western pit wall, six of seven holes exceeded predictions, with an average increase of 24%. Defense Metals plans to update its geological and resource models to quantify potential changes to the mineral resource estimate; the assay comparisons themselves are not a resource estimate.

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Positive

• Minor pointWI26-104 intersected 2.33% TREO over 153.2 metres, with assays 34% above predicted inferred block model grades.
• Minor pointWestern pit-wall assays exceeded predicted grades in six of seven holes, with an average increase of 24%.
• Minor pointWI26-102 returned 2.26% TREO over 91.4 metres, including 3.25% over 34.3 metres.
• Minor pointWI26-103 returned 2.13% TREO over 115.5 metres, including 2.57% over 87.65 metres.
• Minor pointWI26-111 returned 1.89% TREO over 122.55 metres along the western deposit margin.

8 minor points

• Minor pointWI26-110 returned 1.21% TREO over 182.1 metres, including 2.10% over 54 metres.
• Minor pointWI26-109 returned 1.00% TREO over 134.4 metres, including 1.51% over 66.8 metres.
• Minor pointWI26-107 returned 1.43% TREO over 105 metres, including 1.73% over 54 metres.
• Minor pointWI26-106 returned 1.40% TREO over 66 metres, including 1.84% over 33 metres.
• Minor pointWI26-105 returned 1.29% TREO over 84.4 metres, including 1.77% over 36.5 metres.
• Minor pointWI26-108 returned 1.24% TREO over 67.2 metres, including 2.11% over 26.1 metres.
• Minor pointReference-core hole WI26-114 returned 2.68% TREO over 114.7 metres, predominantly through measured-category resource blocks.
• Minor point. Forward-looking: it has not happened yet and may not happen.Defense Metals plans geological and resource model updates to quantify potential mineral resource estimate changes.

Negative

• Moderate pointAssays across 19 resource-upgrade holes totalling 2,887 metres averaged 87% of predicted inferred block model grades.
• Minor pointSouthern-area assays averaged 76% of predicted grades, reflecting a local 20-metre northward mineralized-contact shift.
• Minor pointDrill-assay comparisons with predicted block model grades do not represent a mineral resource estimate.

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VANCOUVER, BC, Oct. 8, 2026 /PRNewswire/ -- Defense Metals Corp. ("Defense Metals" or the "Company"; (TSXV: DEFN) (OTCQB: DFMTF) (FSE: 35D) is pleased to announce assay results for a final ten core drill holes, totalling 1,702 metres (m), completed during spring 2026 at its 100% owned Wicheeda Rare Earth Project (the "Wicheeda Project") located near Prince George, Canada.

Robin Jones, Defense Metals VP Projects, commented: "We're exceptionally pleased that all ten drill holes reported in today's news release intersected significant widths of high to moderate grade Rare Earth Element mineralization within the pit confines defined by the 2025 Preliminary Feasibility Study (PFS) and are expected to contribute positively to a resource classification uplift."

The resource infill drilling was designed to upgrade a significant tonnage of inferred resources, constrained within the limits of the current Wicheeda Project Preliminary-Feasibility Study ("PFS") ultimate pit design, to an indicated or better category (see Defense Metals news release dated February 18, 2025). With the receipt of final 2026 resource upgrade drilling assays presented in this news release the Company intends to update its geological and mineral resource block models to quantify the potential changes to Wicheeda Project mineral resource estimate (MRE) because of this new drilling.

Highlights of the 2026 Wicheeda Deposit inferred resource upgrade drilling:

• Of the 19 inferred resource upgrade drill holes totalling 2,887 m drill assays on average were 87% of predicted inferred block model grades
  
  
• Drill hole WI26-104, which returned the highest-grade x width intercept of the 2026 drill campaign and yielded drill assays 34% higher than predicted inferred block model grades along the southern pit wall
  
  
• In the western pit wall area 6 of 7 drill holes returned assays that exceeded predicted inferred block model grades with an average increase of 24% suggesting further opportunities for both resource upgrading and expansion in this area with additional drilling

Details of Resource Upgrade Effectiveness

Of the 19 inferred resource upgrade drill holes totalling 2,887 m drill assays on average were 87% of predicted inferred block model grades¹. Defense Metals highly is encouraged by the level of accuracy of the Company's block and geological models, given that inferred resources are based on limited geological evidence and sampling, sufficient to imply but not verify geological and grade or quality continuity.

Within the western pit wall area 6 of 7 drill holes returned assays that exceeded predicted inferred block model grades with an average increase of 24%. These drill holes intersected mineralized intercepts that were generally higher grade than predicted and include a higher proportion of higher-grade dolomite carbonatite rocks than predicted by the PFS geological model, suggesting further opportunities for both resource upgrading and expansion in this area with additional drilling.

Within the southern pit area drill holes returned somewhat lower assays, 76% of predicted inferred block model grades, due to a local 20 m northward shift of the mineralized contact. However, notably drill hole WI26-104 returned the highest-grade x width intercept of the 2026 drill campaign and yielded drill assays 34% higher than predicted inferred block model grades.

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1 The resource upgrade effectiveness compares actual drilled assay intervals to PFS within pit inferred mineral resource estimate (MRE) block model grades along the drill trace. Drill assay to block model comparisons are presented for reference purposes only and do not represent an MRE.

Drill Hole Assay Details

The resource upgrade drill holes targeted two specific areas hosting the majority of in pit inferred resources. The results released today include two holes totalling 322 metres targeting the southern PFS ultimate pit wall; in addition to eight holes totalling 1,380 metres along the western pit wall (in addition remaining assay results for WI26-102 see Defense Metals Corp. News release dated August 31, 2026).

South pit wall drill hole highlights include:

Drill holes WI26-102 and WI26-103, drilling outward from inside the Wicheeda Deposit. WI26-102 collared into REE mineralized dolomite carbonatite yielded a higher-grade intercept returning 3.25% TREO over 34.3 m, within a broader interval averaging 2.26% TREO over 91.4 m. Hole WI26-103 drilled at stepper dip on the same section returned 2.57% TREO over 87.7 m within a broader mineralized intersect averaging 2.13% TREO over 115.5 m (Table 1, and Figure 1).

Drill hole WI26-104 drilling to the southwest and cutting obliquely across the southern margin of the Wicheeda Deposit yielded the most significant grade x width intercept of the entire resource upgrade campaign intersecting a broad interval of mineralized dolomite carbonatite from surface returning 2.33% TREO over 153.2 m (Figure 2).

West pit wall highlights include:

West pit wall resource upgrade drilling targeted inferred resources via a fan of seven drill holes collared from a single setup along southwest to northwest azimuths. Drill holes WI26-105 through WI26-111 all intersected mineralized mixed dolomite carbonatite, xenolithic dolomite carbonatite and syenite intervals beneath variable overburden at low elevation along western margin of the Wicheeda Deposit (Figure 3).

A complete list of significant intercepts is presented in Table 1 below; with notable highlights including:

• WI26-109 returning 1.51% TREO over 66.8 m; within a broader interval grading 1.00% TREO over 134.4 m;
• WI26-110 grading 2.10% TREO over 54 m, within a broader interval averaging 1.21% TREO over 182.1 m;
• WI26-111 cutting 1.89% TREO over 122.55 m

Table 1. Wicheeda REE Deposit 2026 Final Diamond Drill Intercepts²

Hole ID	From (m)	To (m)	Interval (m)	TREO3  (%)	Ce2O3 (%)	La2O3 (%)	Nd2O3 (%)	Pr2O3 (%)	Sm2O3 (ppm)	Gd2O3 (ppm)	Eu2O3 (ppm)	Dy2O3 (ppm)	Tb4O7 (ppm)	Ho2O3 (ppm)
WI26-102 (200/-45)	5.7	97.1	91.4	2.26	1.11	0.73	0.28	0.09	309	152	65	43	13	5
including	5.7	40.0	34.3	3.25	1.58	1.10	0.36	0.13	390	187	82	51	16	6
WI26-103 (200/-60)	2.5	118	115.5	2.13	1.03	0.68	0.26	0.09	324	157	70	40	13	5
including	2.5	90.15	87.65	2.57	1.25	0.84	0.31	0.11	380	181	81	41	15	4
WI26-104 (240/-45)	3.8	157	153.2	2.33	1.13	0.78	0.27	0.10	294	136	63	36	12	4
WI26-105 (230/-60)	14.6	99	84.4	1.29	0.63	0.41	0.16	0.05	184	95	42	39	10	6
including	34	70.5	36.5	1.77	0.87	0.57	0.21	0.08	238	120	52	46	13	6
WI26-106 (250/-50)	20	86	66	1.40	0.69	0.44	0.17	0.06	189	96	42	36	10	5
including	20	53	33	1.84	0.92	0.60	0.21	0.08	229	112	50	35	11	5
WI26-107 (250/-70)	10	115	105	1.43	0.70	0.46	0.18	0.06	199	99	43	31	9	4
including	10	64	54	1.73	0.85	0.57	0.21	0.07	227	109	49	29	9	3
WI26-108 (285/-45)	33.8	101	67.2	1.24	0.60	0.38	0.16	0.05	192	115	48	61	14	9
including	33.8	59.9	26.1	2.11	1.02	0.67	0.26	0.09	304	181	74	93	22	14
WI26-109 (285/-70)	11.2	145.6	134.4	1.00	0.49	0.31	0.13	0.04	155	81	35	30	8	4
including	11.2	78	66.8	1.51	0.74	0.48	0.19	0.06	222	111	50	35	10	5
WI26-110 (310/-45)	33	215.1	182.1	1.21	0.59	0.37	0.16	0.05	192	96	43	36	10	5
including	33	87	54	2.10	1.02	0.66	0.27	0.09	302	141	65	48	13	6
WI26-111 (310/-70)	11.45	134	122.55	1.89	0.92	0.62	0.23	0.08	250	120	51	37	11	5
WI26-114 (215/-55)	111	225.7	114.7	2.68	1.30	0.90	0.31	0.11	315	134	56	27	10	3

_______________________________

2The true width of REE mineralization is estimated to be 70-100% of the drilled interval.

3TREO % sum of CeO2, La2O3, Nd2O3, Pr6O11, Sm2O3, Eu2O3, Gd2O3, Tb4O7, Dy2O3 and Ho2O3.

Hole WI26-114 which drilled southwest across the northern Wicheeda Deposit cutting predominantly measured category resource blocks and was designed to provide additional reference mineralized dolomite carbonatite drill core. WI26-114 intersected a 117 m interval of continuously mineralized dolomite carbonatite grading 2.68% TREO (Figure 3).

The 2026 Wicheeda Project drill program comprised 31 core drill holes totalling 5,345 m inclusive of:

• 20 holes (3,136 m) of resource upgrade and infill drilling (includes hole WI26-114)
• 7 holes (1,507 m) pit slope geotechnical drilling
• 4 holes (702 m) waste rock geochemical drilling

Methodology and Quality Assurance/Quality Control

The analytical work reported on herein was performed by ALS Canada Ltd. ("ALS") at their Langley (sample preparation) and Vancouver (ICP-MS fusion), B.C. facilities. ALS is an ISO-IEC 17025:2017 and ISO 9001:2015 accredited geoanalytical laboratory and is independent of the Defense Metals and the Qualified Person ("QP"). Drill core samples were subject to crushing at a minimum of 70% passing 2 mm, followed by pulverizing of a 250-gram split to 85% passing 75 microns. A 0.1-gram sample pulp was then subject to multi-element ICP-MS analysis via lithium-borate fusion to determine individual REE content (ME-MS81h). Defense Metals follows industry standard procedures for the work carried out on the Wicheeda Project, with a quality assurance/quality control ("QA/QC") program. Blank, duplicate, and standard samples were inserted into the sample sequence sent to the laboratory for analysis. The QP and Defense Metals detected no significant QA/QC issues during review of the data.

Drill hole assay and inferred block model grades were compared by flagging drill database assay intervals and inferred resource blocks along the trace of each drill hole. The drilled length, number of samples and assay results were then compared to the predicted block model grades as TREO and individual REE on a grade x width basis to generate percentage increase or decrease.

Qualified Person

The scientific and technical information contained in this news release as it relates to the Wicheeda Project has been reviewed and approved by Kristopher J. Raffle, P.Geo. (B.C.), Principal and Consultant of APEX Geoscience Ltd. of Edmonton, Alberta, and a consultant to the Company, who is a "Qualified Person" as defined in NI 43-101

About Defense Metals Corp. and the Wicheeda Rare Earth Element Project

Defense Metals Corp. is an advanced rare earth elements ("REE") development company focused on delivering strategically critical metals to the western world defence, high-technology, and clean energy supply chains. The Company's primary asset is its 100%-owned Wicheeda REE deposit, located near Prince George, British Columbia, Canada.

The Wicheeda Project is one of the most advanced, undeveloped REE deposits in North America or Europe, featuring a robust mineral resource and mining reserve, as detailed in the Company's 2025 Preliminary Feasibility Study ("PFS"; refer to Company News Release April 7^th, 2025) prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects. The PFS shows the economic potential of the deposit and supports future project development.

Defense Metals is committed to advancing the Wicheeda Project through the Feasibility Study stage, permitting, and ultimately into production, positioning the Company to become a reliable supplier of critical REEs that are essential to modern defence systems, advanced manufacturing, and energy-efficient technologies.

The PFS for the Wicheeda Rare Earth Element Project is preliminary in nature and includes numerous assumptions regarding metallurgy, capital and operating costs, and market conditions. Mineral reserves and the economic outcomes, as projected in the PFS, are subject to significant uncertainties, and there is no certainty that the results of the PFS will be realized. Additional studies, including a Feasibility Study, and permitting, are required before a production decision can be made for the Wicheeda Project.

For further information, please visit www.defensemetals.com or contact:
Ali Mahdavi
SVP Corporate Development
Email: am@spinnakercmi.com
+1.416.962.3300

Mark Tory
President and CEO
Email: mark@defensemetals.com 

Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) accepts responsibility for the adequacy or accuracy of this news release.

Cautionary Statement Regarding "Forward-Looking" Information
This news release contains "forward‐looking information or statements" within the meaning of applicable securities laws, which may include, without limitation, any statements (expressed or implied) relating to: advancing the Wicheeda Project and the proposed debt settlement. Forward-looking statements are typically identified by words such as "plan," "believe," "expect," "anticipate," "intend," "outlook," "estimate," "forecast," "project," "continue," "could," "may," "might," "possible," "potential," "predict," "should," "would" and other similar words and expressions, but the absence of these words does not mean that a statement is not forward-looking. All statements in this news release, other than statements of historical facts, that address events, contribution or developments that the Company expects to occur, are forward-looking statements.  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. Such statements and information are based on numerous assumptions regarding present and future business strategies and the environment in which the Company will operate in the future, including the price of rare earth elements, the anticipated costs and expenditures, the ability to achieve its goals, that general business and economic conditions will not change in a material adverse manner, that financing will be available if and when needed and on reasonable terms. Such forward-looking information reflects the Company's views with respect to future events and is subject to risks, uncertainties and assumptions, including the risks and uncertainties relating to the interpretation of exploration and metallurgical results, risks related to the inherent uncertainty of exploration and development and cost estimates, the potential for unexpected costs and expenses and those other risks filed under the Company's profile on SEDAR+ (www.sedarplus.ca). While such estimates and assumptions are considered reasonable by the management of the Company, they are inherently subject to significant business, economic, competitive and regulatory uncertainties and risks. Factors that could cause actual results to differ materially from those in forward looking statements include, but are not limited to, continued availability of capital and financing and general economic, market or business conditions, adverse weather and climate conditions, failure to maintain or obtain all necessary government permits, approvals and authorizations, failure to maintain or obtain community acceptance (including First Nations), risks relating to unanticipated operational difficulties (including failure of equipment or processes to operate in accordance with specifications or expectations, cost escalation, unavailability of personnel, materials and equipment, government action or delays in the receipt of government approvals, industrial disturbances or other job action, and unanticipated events related to health, safety and environmental matters), risks relating to inaccurate geological, metallurgical, engineering and pricing assumptions, decrease in the price of rare earth elements, the impact of viruses and diseases on the Company's ability to operate, restriction on labour and international travel and supply chains, loss of key employees, consultants, officers or directors, increase in costs, delayed results, litigation, and failure of counterparties to perform their contractual obligations. The Company does not undertake to update forward–looking statements or forward–looking information, except as required by law.

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SOURCE Defense Metals Corp.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What was Defense Metals' highest grade-times-width result from the 2026 Wicheeda resource-upgrade drilling?

Hole WI26-104 returned 2.33% total rare earth oxides over 153.2 metres, the campaign's highest grade-times-width intercept. It drilled southwest across the deposit's southern margin, and its assays were 34% above predicted inferred block model grades.

How did Defense Metals' Wicheeda drilling compare with predicted resource grades?

Across 19 inferred-resource upgrade holes totalling 2,887 metres, assays averaged 87% of predicted inferred block model grades. Southern-area assays averaged 76% of predictions. Along the western pit wall, six of seven holes exceeded predictions, with an average increase of 24%. These comparisons are not a mineral resource estimate.

What are the estimated true widths of Defense Metals' Wicheeda drill intercepts?

The true width of rare earth mineralization is estimated at 70–100% of the drilled interval. Reported drill lengths therefore are not necessarily the thickness of the mineralized zone.

What drilling did Defense Metals complete at Wicheeda in 2026?

The 2026 Wicheeda program comprised 31 core drill holes totalling 5,345 metres. It included 20 resource-upgrade and infill holes totalling 3,136 metres, seven pit-slope geotechnical holes totalling 1,507 metres, and four waste-rock geochemical holes totalling 702 metres.