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Eastport Critical Metals Announces Nakalakwana Phase 1 Drilling Complete at Matsitama Copper Project

Exploration Programs

Eastport Critical Metals Announces

Nakalakwana Phase 1 Drilling Complete at

Matsitama Copper Project

Vancouver, British Columbia--(Newsfile Corp. - May 1, 2026) - Eastport Critical Metals Corp. (TSXV:

EVI) (OTCQB: EVIIF) ("Eastport" or the "Company") is pleased to announce the successful completion

of Phase 1 of the 2025/26 multi-phase diamond drill program at the resource definition stage

Nakalakwana Hill copper deposit

("

NAK

"

)

, one of eight targets comprising the Company's flagship

Matsitama Copper Project

in northeast Botswana. NAK is an advanced-stage copper opportunity

located approximately 90 km south of the operating Kopano Copper Mine (formerly Mowana). NAK lies

within one of the Company's six contiguous Prospecting Licences that directly abuts the Kopano Mining

Licence boundary (see

Figure 1

).

NAK-Highlights

:

Resource Infill Drilling on NAK Main

: Completed tighter-spaced infill drilling on the NAK Main

zone to update and restate the most recent historical resource estimate in compliance with NI 43-

101. The non-current SRK Consulting (South Africa) 2013 Nakalakwana Hill Mineral Resource

estimate stated Indicated Mineral Resources of 6.8 Mt at 0.48% Cu and Inferred Mineral

Resources of 3.1 Mt at 0.43% Cu within an open-pit shell at 0.3% Cu cut-off grade, in compliance

with the South African Code for the Reporting of Exploration Results, Mineral Resources and

Mineral Reserves (the SAMREC Code, 2007 edition).

1

Step-Out Exploration on Strike

: Targeted step-out and exploration drilling at NAK-West and

NAK-East to chase extensions on both sides of the NAK Main zone resource. Historic holes within

a few kilometres delivered thick, near-surface intervals of copper mineralisation occasionally with

gold. Portable x-ray fluorescence spectrometer (pXRF) readings on core from the new drill holes

are encouraging and point to strong continuity of mineralisation (

Figure 2

).

Re-Interpretation Opportunity at Current Copper Prices

: The SRK 2013 wireframe resource

model contemplated a lower copper price than present (~US$2/lb versus today's ~US$5/lb), and

the Company views a

low-cost opportunity to potentially re-constrain additional tonnage within an

updated envelope. An update on this opportunity is expected in Q3 2026.

Assay Update and Lab Management

: In order to expediate sample assay turn-around times the

Company is utilising two accredited South Africa based assay laboratories along with the

appropriate QA/QC procedures. In general, the Company's active projects are sending one or two

sample shipments per week to the assay laboratories. Consistent receipt of results from the

Company's diamond drilling activities (

Table 1

) is expected to commence in the coming weeks.

* Eastport cautions that the previous Nakalakwana Hill resource estimates are not current and are not

accepted under NI 43-101 as they were stated under the superseded SAMREC 2007 reporting code

(see discussion of "

Historical Resource

" below).

Figure 1: Location of the Matsitama Copper Project Licence Areas, and the

Nakalakwana Hill

(NAK) Deposit, Copper Cobra and Kopano South Prospect Areas in Relation to the Operating

Kopano Copper Mine

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Figure Notes:

Top map Nakalakwana Hill Deposit Selected Significant Copper Drill Intercepts.

Bottom Map: Enlargement of the Main Deposit ("NAK Main") area showing mineralization trend open

along strike to the east and west. Projection: UTM Zone 35s WGS 84 Datum.

Figure 2: Nakalakwana Hill Deposit Selected Significant Copper Drill Intercepts and Enlarged

view of the Main Zone Historical Resource Area

Table 1: Total Diamond Drilling at NAK to date:

Nakalakwana Hill

Metres Drilled

Diamond Drill Holes

NAK-Main

2,445

10

NAK-East

650

3

NAK-West

550

2

TOTAL

3,645

15

Burns Singh Tennent-Bhohi, CEO, commented

:

"

The Matsitama Copper Project is data-rich, with decades worth of prior exploration work that is

contributing to our current and future project planning. The successful completion of the Phase 1 infill

drilling program at the NAK deposit, is a key milestone in establishing a NI 43-101 compliant Mineral

Resource for the established copper deposit which is supported by more than 22,000 metres of

previous drilling and three historic SAMREC (2007) mineral resource estimates.

This drill program was designed to deliver on two critical vectors for Eastport: tighter-spaced infill

drilling on the NAK Main zone to bring it into compliance with NI 43-101 standards for any future

resource reporting; and second, targeted step-out exploration drilling both east and west of the Main

zone, where historic holes had already returned thick intervals of copper mineralization with

associated gold values.

These two verticals support our thesis that two or more shallow mineralized zones could form a

consolidated model for future resource estimation as shown in the plan-view diagram (Figure 2), the

East and West zones lie 6 and 4 kilometres respectively from the Main zone.

Our technical team's objective is to now gain better geological control along strike of the NAK Main

zone, on the East and West zones, where we anticipate further drilling upon receipt of assay results.

Our current objective is scale."

Proximity to the Operating Kopano Mine

Both NAK and Kopano sit in the same copper-endowed Matsitama Schist Belt an Archaean orogenic

greenschist terrain hosting metasediments (carbonaceous argillaceous schists, carbonates, and altered

sedimentary rocks) bounded by granitoids. NAK Main is characterised as a copper-rich, structurally

controlled, steeply SW-dipping zone that remains open at depth. It features disseminated to veinlet

sulphides with thick mineralized intervals confirmed in both historic and recent drilling. Historic resources

were modelled as open-pit constrained giving NAK a solid, predictable foundation near to an operating

mine.

Historical Resource

Eastport does not consider the 2013 SRK Consulting (South Africa) Pty Limited ("SRK") mineral

resource as current.

SRK was contracted by Matsitama Minerals (Pty) Ltd ("Matsitama") to undertake

the update of the Mineral Resources for the Nakalakwana Hill copper deposit on the basis of data from

30 drillholes completed during 2012.

Mineral Resources classified as Indicated and Inferred in

accordance with the definitions and guidelines of the SAMREC Code 2007 edition were reported from

the optimistic pit as shown in Table 2.

1

Table 2: Historical Mineral Resources for Nakalakwana based on the optimistic pit and a cut-off

grade of 3000 ppm, SRK 2013

Resource Class

Tonnage (Mt)

Copper Grade (ppm)

Indicated

6.8

4,800

Inferred

3.1

4,294

Total

9.9

4,640

Table Note:

Historical Resource stated in compliance with SAMREC 2007

In classifying the Mineral resources for Nakalakwana, SRK reviewed the drillhole data distribution, the

consistency in the grade distributions, the QA/QC, the spatial continuity observed in the variograms and

the quality of the estimates concomitant with the quantity of composites informing the estimates. SRK

considered the relatively well informed areas with drillhole intersections within 50 m spacing and with

demonstrated consistency in the grade distribution as Indicated Mineral Resources. The block estimates

informed by data spaced more than 50 m apart were classified as Inferred Mineral Resources. The

classification was consistent with the guidelines and definitions of The SAMREC Code (2007 edition),

which has since been superseded.

For Cut-off grade optimisation SRK obtained realistic costs based on the Mowana pit operations from

African Copper PLC and applied an escalation factor of 30% to the revenue factors and reduced the

mining costs by 30 % for the optimistic scenario for reporting resources. The pit optimisation run based

on this scenario indicated a cut-off grade of about 3 000 ppm Cu and a pit shell within which total mineral

resources of 9.9 Mt at 4,640 ppm Cu were reported at the 3,000 ppm cut-off grade (Table 2).

The Qualified Person ("QP") considers the historical estimate to be relevant as an indication of the

potential scale and grade of mineralization at Nakalakwana and as a basis for guiding future exploration

and resource delineation programs. The estimate was prepared by a reputable independent consulting

firm using industry-standard methodologies applicable at the time. However, its reliability is limited by

the age of the data (2012 drilling), the relatively wide drill spacing in portions of the deposit, and the

absence of verification work by the current QP. In addition, key economic and technical assumptions,

including costs, recoveries, and metallurgical performance, have not been independently validated by the

Company.

The Indicated and Inferred Mineral Resource categories reported under the SAMREC Code (2007) are

broadly comparable to the Indicated and Inferred Mineral Resource categories as defined in the

Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") Definition Standards adopted under NI

43-101, in that both classification systems are based on geological confidence and data quality.

However, the historical estimate has not been prepared in accordance with CIM Definition Standards,

including the explicit requirement to demonstrate reasonable prospects for eventual economic extraction

("RPEEE"), and therefore should not be relied upon as a current mineral resource.

Significant work is required to verify and upgrade the historical estimate to a current mineral resource

compliant with NI 43-101. The Company would need to validate historical data and QA/QC, complete

additional drilling, update geological modelling, undertake metallurgical work, and establish economic

parameters supporting RPEEE.

The SRK 2013 Mineral Resource estimate is considered to be historical as it was reported in line with

the 2007 Edition of the SAMREC Code which has subsequently been superseded by the 2016 Edion of

the SAMREC Code. The SAMREC Code (2016) adopted the CRIRSCO (Committee for Mineral

Reserves International Reporting Standards) standard definitions, bringing SAMREC 2016 into full

alignment with the International Reporting Code Template and as an acceptable foreign code under NI

43-101. The Company intends to complete a CIM-compliant mineral resource estimate incorporating

additional drilling and updated technical and economic assumptions. Neither the QP, the Company, nor

its consultants have undertaken sufficient work to classify the historical estimate as current, and the

Company is not treating the historical estimate as a current mineral resource.

Reference

1

.

SRK Consulting (South Africa) (Pty) Ltd Report titled:

Mineral Resource update for the Nakalakwana Hill copper deposit Botswana,

Reported Prepared for Matsitama Minerals (Pty) Ltd, Report Number 438430

, dated 24 May 2013. Report Author:

Senzeni Mandava,

Resource Geologist. Site Visit & Report Reviewer (QP): Victor Simposya, Partner and Principal Geologist.

Qualified Person

The technical information in this news release has been reviewed and approved by Nicholas O'Reilly

MIMMM (QMR) MAusIMM MSc DIC, an independent consultant and Qualified Person under National

Instrument 43-101 - Standards of Disclosure for Mineral Projects.

Eastport Critical Metals Corp: Project Location Map

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About Eastport Critical Metals Corp. (TSXV: EVI) (OTCQB: EVIIF)

Eastport is a critical minerals development company advancing five projects in Botswana, with

cumulative historical and current expenditures approaching CAD$20 million. The Company's most

advanced asset is the Matsitama Copper Project, which hosts multiple sizeable targets across the

Matsitama copper district.

The Company's additional projects include Selebi East, a nickel-copper-cobalt project located seven

kilometres east of the historic Selebi Mines; the Semarule Rare Earth Elements Project, positioned

within the Gaborone-Molepolole corridor; the Foley Uranium Project, adjoining the Letlhakane uranium

deposit; and the Keng Project, which targets nickel, copper and PGE's on the northern margin of the

Molopo Farms Complex.

Botswana is widely regarded as one of Africa's strongest mining jurisdictions, combining the continent's

highest GDP per capita with a 50-year track record of large-scale mineral development since the Orapa

diamond discovery in 1967. The country ranks among the top performers globally on the Fraser

Institute's Investment Attractiveness Index and is the highest-rated jurisdiction in Africa on the Policy

Perception Index. These rankings reflect Botswana's stable regulatory environment, consistent rule of

law, and long-standing support for responsible mineral development - factors that have underpinned

significant investment and major M&A activity in the natural resources sector in recent years.

On behalf of the Board of Directors

"

Burns Singh Tennent-Bhohi

"

Burns Singh Tennent-Bhohi, CEO

Eastport Critical Metals Corp.

For further information about Eastport, please contact:

Burns Singh Tennent-Bhohi

CEO and Director

[email protected]

Disclaimer for Forward-Looking Information

This news release includes certain statements and information that may constitute forward-looking

information within the meaning of applicable Canadian securities laws. Forward-looking statements

relate to future events or future performance and reflect the expectations or beliefs of management of

the Company regarding future events. Generally, forward-looking statements and information can be

identified by the use of forward-looking terminology such as "intends" or "anticipates", or variations of

such words and phrases or statements that certain actions, events or results "may", "could", "should",

"would" or "occur". This information and these statements, referred to herein as "forward-looking

statements", are not historical facts, are made as of the date of this news release and include without

limitation, statements regarding discussions of future plans, estimates and forecasts and statements

as to management's expectations and intentions with respect to, among other things: the intended use

of proceeds raised under the Offering; the Company delivering value to its shareholders through its

critical metal's portfolio; the Company's exploration and development programs; the advancement of

multi-asset drill campaigns across key critical metals and the timing thereof; and the receipt of final

approval of the Offering from the TSXV.

These forward-looking statements involve numerous risks and uncertainties and actual results might

differ materially from results suggested in any forward-looking statements. These risks and

uncertainties include, among other things: delays in obtaining or failure to obtain final approval from

the TSXV for the Offering; fluctuations in commodity prices for critical metals, including copper,

uranium and rare earth elements; the Company's ability to successfully execute its exploration and

development programs; risks inherent in mineral exploration activities; the Company's ability to meet

anticipated timelines for its multi-asset drill campaigns; operational risks and technical challenges

associated with exploration activities in Botswana; and changes in the Company's business plans

impacting the intended use of proceeds raised under the Offering.

In making the forward looking statements in this news release, the Company has applied several

material assumptions, including without limitation, that: the Company will obtain the required

regulatory approvals for the Offering; the Company's exploration and development programs will

proceed as planned; commodity prices for critical metals will remain at levels sufficient to support

continued exploration activities; the Company will continue to have access to the necessary permits,

equipment and qualified personnel to conduct its exploration programs; the Company's critical

metal's portfolio will continue to present viable opportunities for value creation; and the Company will

use the proceeds of the Offering as currently anticipated. Although management of the Company has

attempted to identify important factors that could cause actual results to differ materially from those

contained in forward-looking statements or forward-looking information, there may be other factors that

cause results not to be as anticipated, estimated or intended. 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. The Company does not undertake to

update any forward-looking statement, forward-looking information or financial outlook that are

incorporated by reference herein, except in accordance with applicable securities laws.

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.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/295424