Northmin Corporation Announces High Grade Copper Drilling Results from the Tynagh Project and the Issuance of Options to Directors, Officers and Employees
Northmin Corporation Announces High Grade
Copper Drilling Results from the Tynagh
Project and the Issuance of Options to
Directors, Officers and Employees
Toronto, Ontario--(Newsfile Corp. - July 13, 2026) - Northmin Corporation (TSXV: NMB) ("
Northmin
" or
the "
Company
") is pleased to announce assay results from the first two drill holes drilled on the Tynagh
mine site as part of its hard rock Ag-Cu-Zn-Pb exploration program at the 100%-owned Tynagh Project
("
Tynagh
"), Republic of Ireland, and the issuance, on July 9, 2026, of 3,500,000 incentive stock options
to directors, officers and employees pursuant to the terms of the Company's Stock Option Plan.
Highlights:
Two holes intersected numerous mineralized intercepts including high-grade copper in drill hole
3615-26-07:
6.4m grading 4.92% Cu, 0.98% Sb & 62.04 g/t Ag from 149.0m
including 1.95m grading 10.08% Cu, 2.36% Sb & 136.46 g/t Ag from 153.45m
3615-26-07 intersected a broad zone of Waulsortian reef-hosted polymetallic mineralization
peripheral to the mine workings and structurally-controlled high-grade copper mineralization in the
footwall below the historic mine confirming the presence of an unmined footwall copper-silver-
antimony target;
In the Waulsortian Reef Limestone,
27.45m grading 0.26% Cu, 4.57% Zn+Pb, 0.06% Sb and 20.78 g/t Ag from 90.55m in
Waulsortian Reef Limestone,
Including 2.75m grading 0.83% Cu, 0.99% Zn+Pb, 0.18% Sb and 29.03 g/t Ag from 97.0m,
and 6.8m grading 13.31% Zn+Pb and 48.79 g/t Ag from 110.2m.
In the previously unmined sub-reef Lower Muddy Limestone,
15.3m grading 2.16% Cu, 0.77% Zn+Pb, 0.42% Sb and 32.01 g/t Ag from 141.0m,
Including 6.4m grading 4.92% Cu, 0.67% Zn+Pb, 0.98% Sb and 62.04 g/t Ag from 149.0m
(stated above),
Which includes 1.95m grading 10.08% Cu, 1.2% Zn+Pb, 2.36% Sb, and 136.46 g/t Ag from
153.45m.
3615-26-06, collared 85m northwest of 3615-26-07, also intersected Waulsortian reef-hosted
lead-zinc-silver mineralization and footwall copper mineralization below the historic mine;
In the Waulsortian Reef Limestone,
3.6m at 0.38% Cu, 2.19% Zn+Pb, 0.04% Sb and 9.62 g/t Ag from 127.0m.
3.5m at 1.03% Cu, 0.17% Zn+Pb, 0.25% Sb and 15.86 g/t Ag from 150.5m.
6.1m grading 0.99% Cu, 2.85% Zn+Pb, 0.18% Sb and 22.25 g/t Ag from 168.9m,
Including 2.8m grading 0.91% Cu, 6.11% Zn+Pb, 0.17% Sb and 32.11 g/t Ag,
And including 0.4m grading 4.95% Cu, Pb, 0.52% Zn+Pb, 1.28% Sb and 93.2 g/t Ag
In the previously unmined sub-reef Lower Muddy Limestone,
9.15m grading 0.95% Cu, 2.18% Zn+Pb, 0.14% Sb and 15.58 g/t Ag from 184.25m,
including 6.2m grading 1.22% Cu, 1.42% Zn+Pb, 0.19% Sb, 19.4 g/t Ag.
The thickness, grade, and comparable geochemical signature of the lower copper-silver-antimony
zone intersections, located 75m apart, is encouraging and this zone warrants systematic drill
testing over 1,500m of strike beneath the historically mined Zn-Pb-Ag deposit.
"
Today's results are very encouraging and confirm the potential for broad zones of near-mine
polymetallic mineralization and significant structurally-controlled copper, antimony and silver
mineralization along the Tynagh Fault beneath the historically mined Zn-Pb-Ag mineralization
,"
stated Julian Vickers, CEO. "
From 1965 to 1980 mining focused on the reef-hosted mineralization,
with approximately 9.0Mt of zinc, lead, and silver ore treated in the Tynagh concentrator from
sequential open-pit and high-grade underground operations. We believe there is much potential
remaining at the site especially for the unexplored copper mineralization both in the reef and the sub-
reef lithologies. Northmin aims to emulate the success of Group Eleven Resources which has
successfully identified copper mineralization on structures beneath the zinc-lead mineralization at its
Ballywire Project, 80km to the south of Tynagh. We look forward to continued drilling at Tynagh while
we also advance the silver tailings recycling project in parallel.
"
Exhibit 1. Plan Map of the Tynagh Mine Site Showing New Holes
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Exhibit 2. Cross-Section Showing Today's Results from 3615-26-07 at Tynagh
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Exhibit 3. Cross-Section Showing Today's Results from 3615-26-06 at Tynagh
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Note on Exhibit 2&3: True thickness of the mineralization in holes 3615-26-06 and 3615-26-07 as a
percentage of the down-hole interval, is estimated to be in the range 79-88%. The pit outline,
underground drives and workings, and historic drill holes are based on digitized maps and mine plans
and the reliability of all features cannot be guaranteed. The features should be assumed to be
approximate only. Historical records show no evidence of stoping in these sections. The workings shown
are drives and headings including the decline to Zone 3 to the east. Sections prepared by Blackwell
Geoservices, July 2026.
Exhibit 4. Summary of New Assays from 3615-26-06 at Tynagh
Hole ID
From (m)
To (m)
Int (m)
Cu (%)
Pb (%)
Zn (%)
Zn+Pb (%)
Sb (%)
Ag (g/t)
3615-26-06
95.8
96.3
0.5
0.01
3.07
0.23
3.30
-
9.66
3615-26-06
121.75
124
2.25
0.44
0.73
0.40
1.12
0.10
12.91
3615-26-06
127
130.6
3.6
0.38
1.19
1.00
2.19
0.04
9.62
including
127
128
1
1.09
1.73
0.35
2.08
0.10
9.75
& including
128.8
130.6
1.8
0.10
1.41
1.81
3.21
0.01
11.74
3615-26-06
133.5
135.55
2.05
0.00
0.06
0.82
0.87
-
1.92
3615-26-06
142.65
145.3
2.65
0.02
2.06
1.05
3.11
-
8.86
3615-26-06
150.5
154
3.5
1.03
0.01
0.16
0.17
0.25
15.86
including
152.25
152.9
0.65
4.61
0.05
0.71
0.76
1.09
71.3
3615-26-06
154
157.7
3.7
0.13
1.31
0.04
1.35
0.02
3.55
3615-26-06
168.9
175
6.1
0.99
2.39
0.46
2.85
0.18
22.25
including
168.9
171.7
2.8
0.91
5.20
0.91
6.11
0.17
32.11
& including
173.7
174.1
0.4
4.95
0.02
0.5
0.52
1.28
93.2
3615-26-06
180.8
181.6
0.8
1.25
0.47
0.19
0.66
0.39
46.5
3615-26-06
184.25
193.4
9.15
0.95
1.52
0.65
2.18
0.14
15.58
including
184.25
185.8
1.55
0.23
3.70
3.44
7.15
-
5.49
3615-26-06
185.8
192
6.2
1.22
1.32
0.10
1.42
0.19
19.40
Summary of New Assays from 3615-26-07 at Tynagh
Hole ID
From (m)
To (m)
Int (m)
Cu (%)
Pb (%)
Zn (%)
Zn+Pb (%)
Sb (%)
Ag (g/t)
3615-26-07
69.4
71.4
2
0.19
1.61
0.05
1.65
0.02
10.42
3615-26-07
75.5
76.15
0.65
1.22
0.47
0.08
0.56
0.03
13.7
3615-26-07
90.55
118
27.45
0.26
3.00
1.57
4.44
0.06
20.78
Including
90.55
101
10.45
0.50
1.41
0.99
2.39
0.12
18.10
which includes
97
99.75
2.75
0.83
0.87
0.12
0.99
0.18
29.03
& including
102.95
106.2
3.25
0.29
0.53
0.77
1.30
0.07
10.59
& including
109.2
118
8.8
0.10
7.33
3.32
10.65
0.03
38.36
which includes*
110.2
114
3.8
0.03
3.57
7.00
10.57
0.01
24.87
&*
114
117
3
0.23
16.42
0.36
15.58
0.07
79.10
3615-26-07
123
124
1
0.01
0.84
0.90
1.74
-
3.25
3615-26-07
129
131.5
2.5
0.01
1.16
0.01
1.16
-
4.43
3615-26-07
135
136
1
1.31
3.87
0.36
4.23
0.30
94.3
3615-26-07
141
156.3
15.3
2.16
0.49
0.28
0.77
0.42
32.01
including
149
155.4
6.4
4.92
0.17
0.50
0.67
0.98
62.04
which includes
153.45
155.4
1.95
10.08
0.02
1.18
1.20
2.36
136.46
Note on tables above: True thickness of Deeper Cu-Ag mineralization in hole 3615-26-07 as a percentage of the down-hole interval, is estimated to be
88%; "-" means less than 0.01%. *Note 'from' and 'to' depths as some 'included' intervals are presented to show variation in Zn and Pb grades within the
same broader intersection e.g. 6.8m grading 13.31% Zn+Pb and 48.79 g/t Ag from 110.2m reported in the highlights is included in the table as separate
Zn-rich (3.8m) and Pb-rich (3m) intersections.
Exhibit 5. Drill hole information for the holes reported in this announcement.
Drillhole ID
ITM* Easting
ITM Northing
RL (m)
Azimuth
Dip
EOH (m)
Core Diameter
3615-26-06
574908
712879
63.06
172
-54
212.00
HQ
3615-26-07
574984.10
712834.90
65.67
172
-62
164.40
HQ
*ITM - Irish Transverse Mercator (IRENET95, EPSG:2157)
Tynagh Drilling Results - Further Information
The two angled drill holes, 3615-26-06 and 3615-26-07, are the first holes drilled by the Company in
Zone 2 (Open Pit Area) to target both the polymetallic in-situ reef-hosted mineralization and the copper
mineralization hosted in the reef and in the Lower Muddy Limestone adjacent to the Tynagh Fault. The
Tynagh Fault is a major basin-bounding structure located along the south side of the North Tynagh Basin
and it acted as the main conduit for hydrothermal fluids that formed the c.9Mt Tynagh Deposit (Zn-Pb-Ag-
Cu-Baryte) which was exploited between 1965 and 1982. Base metal mineralization has been
intersected in several drill holes over 8km of strike along the Tynagh structure.
The new results listed above and included in the table above, including a high-grade copper intersection
of 6.4m grading 4.92% Cu, are highly encouraging for the discovery of a Cu-Ag-Sb zone in sub-reef
lithologies along the Tynagh fault. The new results give the Company confidence that a valid copper
exploration target remains to be explored at Tynagh in addition to the zones of shallow bulk zinc-lead
mineralization which remain in-situ in the micrite reef banks peripheral to the high-grade historic
workings. Hole 3615-26-07 demonstrates this with 27.45m grading 0.26% Cu, 4.57% Zn+Pb, 0.06% Sb
and 20.8 g/t Ag from 90.55m in Waulsortian Reef Limestone. This zone also includes higher-grade
sections such as 6.8m at 13.31% Zn+Pb and 48.79 g/t Ag. No mine workings were encountered in either
of the two drill holes.
Recent exploration success by Group Eleven Resources (TSXV) at their Ballywire Discovery, 80km to
the south of Tynagh, have shown that Irish-type carbonate-hosted base metal deposits can yield
significant copper-silver grades on structures underlying the zinc-lead mineralization. Historic
intersections of copper mineralization and the potential for copper have been recorded in historic mine
reports, documents and letters in the mine archives for Tynagh but none of the historic core has survived
to be able to verify these reports with confidence. The new results reported here add confidence to the
copper exploration target that lies below the reef-hosted polymetallic mineralization at Tynagh.
Following the close of the Qualifying Transaction and recent TSXV listing, the Company is well-financed
and fully permitted to continue drilling the remaining 8 holes of the initial 10-hole c.2,000m program at the
Tynagh mine site this summer. To verify the historical data and validate the mineralization, the Company
intends to implement a comprehensive exploration program, which will include systematic drilling along
the Tynagh Fault while executing modern QA/QC procedures.
Incentive Options
Northmin Corporation also announces that it has granted 3,500,000 incentive stock options to directors,
officers and employees pursuant to the terms of the Company's Stock Option Plan.
The stock options are exercisable at a price of $0.25 per common share and will expire on July 9, 2028,
being two (2) years from the date of grant. The options will be subject to the terms of the Company's
stock option plan, as filed on the Company's SEDAR+ profile on June 22, 2026, and the policies of the
TSX Venture Exchange (the "
TSXV
").
The grant of options remains subject to the approval of the TSXV.
Notes and Disclosure on Historical Production at Tynagh
Past production records of the Tynagh mine are taken from the 1981 Annual Report of Northgate
Exploration Limited, a Canadian-listed company that owned 100% of the mine operator, Irish Base
Metals Limited. The 1981 Annual Report states that from 1965 until July 1980, 'approximately nine
million tons of ore were treated in the Tynagh concentrator, producing approximately two million tons of
lead and zinc concentrates containing 1,062 million lb. of lead, 620 million lb. of zinc, and 44 million lb. of
copper, with by-product silver recovery amounting to nearly 16 million oz'. Reprocessing of stockpiles for
silver oxide took place in 1981 with final closure in 1982.
A Qualified Person has not fully verified the historical production data, and the figures are presented
solely for historical context. These historical production figures are not necessarily indicative of
remaining mineralization or the future economic viability of the property.
Qualified Person
Technical information in this news release has been prepared by and approved by Aiden Lavelle
EurGeol, P.Geo, General Manager Ireland for Northmin and a qualified person (a "
QP
") as defined under
National Instrument 43-101. Standards of Disclosure for Mineral Projects
("
NI 43-101
").
Sampling and Analytical Procedures
All core drilled at Tynagh and reported in this announcement was HQ (63.5mm) and was cut using a rock
saw. Sample intervals vary between 0.4m to 2.05m with an average (over 168 samples) of 1.03m. The
half-core samples are bagged, labelled and sealed at the Company's core shed facility on the Tynagh
Mine Site, 15km from Loughrea in County Galway, Ireland. The core sampling was carried out by the QP.
Transport of samples in sealed nylon sacks was by the QP to ALS Laboratories in nearby Loughrea
town. ALS Minerals is a large, independent and ISO certified analytical service company, originally
based in Loughrea to serve the Tynagh mine. Sample preparation at the ALS facility was by method
Prep-31, comprising fine crushing 70% < 2mm, riffle splitter, pulverise up to 250g 85% < 75um.
Analytical procedures are 48 element four acid ICP-MS (codes ME-MS61). Over-limit analyses for Ag,
Cu, Zn and Pb was by method ME-OG62. One sample exceeding 20% lead (Pb), 4 samples exceeding
1% Antimony (Sb) and three samples exceeding 1% arsenic (As) content were analysed by XRF by
method ME-XRF15c. Barium values are not reported above as they are semi-quantitative but typically
range from <500ppm to 5,000ppm Ba. The Company will conduct further analyses and investigate the
best method and protocol for assaying baryte in future drill holes, if results indicate that it is warranted.
Quality Assurance/Quality Control (QA/QC) Information
Northmin inserts certified reference materials ("CRMs" or "Standards") as well as blank material and
quarter core duplicates, to its sample stream as part of its industry-standard QA/QC program. The QC
results have been reviewed by the QP, who is satisfied that all the results are within acceptable
parameters. The QP has validated the sampling and chain of custody protocols used by Northmin.
About Northmin Corporation
Northmin Corp. (TSXV: NMB) is an exploration and development company advancing the 100%-owned
Tynagh Tailings Recycling Project and the Tynagh Copper-Zinc brownfield exploration project near
Loughrea in County Galway, Ireland. The Tailings Ponds have a NI 43-101 compliant resource consisting
of 2.69Mt Inferred at 21.6% BaO, 49 g/t Ag, 3.56% Zn, 2.68% Pb and 0.23% Cu in the West Pond,
1.26Mt Indicated at 13.2% BaO, 34 g/t Ag, 3.63% Zn, 2.16% Pb and 0.15% Cu in the East Pond
(bottom) and 2.7Mt Indicated at 9.5% BaO, 13 g/t Ag, 1.02% Zn and 0.65% Pb in the East Pond (top).
The tailings ponds are accessible and there has been little to no rehabilitation of the site since mine
closure in 1985. The Company is also assessing the waste stockpile on the site and has previously
announced high-grade silver results from first pass sampling.
ON BEHALF OF THE BOARD OF DIRECTORS
Julian Vickers
Chief Executive Officer
E:
|
T: 647.202.3904
E:
|
T: +353-86-392-1523
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
Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. The
estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title,
taxation, socio-political, marketing or other relevant issues. The quantity and grade of reported Inferred
Mineral Resources are uncertain in nature and there has been insufficient exploration to define these
Inferred Mineral Resources as Indicated or Measured Mineral Resources. It is uncertain if further
exploration will result in upgrading them to the Indicated or Measured category.
References to exploration results, mineralization, mineral resources or exploration successes on
adjacent or nearby properties, including the Ballywire Project and other projects operated by third
parties, are provided for geological context only and are not necessarily indicative of the mineralization,
exploration potential or results that may be achieved on the Tynagh Project.
Certain information set out in this news release constitutes forward-looking information. Forward looking
statements are often, but not always, identified by the use of words such as "seek", "anticipate", "plan",
"continue", "estimate", "expect", "may", "will", "intend", "could", "might", "should", "believe" and similar
expressions. Forward-looking information in this news release includes, without limitation, statements
regarding: the interpretation and significance of drill results; the continuity, extent, grade and nature of
mineralization; the existence and potential of copper, silver, antimony, zinc and lead mineralization at the
Tynagh Project; exploration targets and exploration potential; the relationship between observed
mineralization and historical drilling results; comparisons to other mineral deposits or discoveries; the
planned completion of the remaining drill holes in the current exploration program; future drilling,
exploration, metallurgical, technical and evaluation programs; the verification and validation of historical
information; the potential for the delineation of mineral resources; and the Company's future plans,
objectives and strategy for the Tynagh Project. Forward-looking statements are based upon the opinions
and expectations of management of the Company as at the effective date of such statements and, in
certain cases, information provided or disseminated by third parties. Forward-looking information is
based on a number of assumptions, including, among others, assumptions regarding the accuracy of
geological interpretations, the continuity of mineralization, the reliability of historical data, the availability
of financing, the receipt of required permits and approvals, the availability of personnel and equipment,
and general business, economic, market and regulatory conditions. Although the Company believes that
the expectations reflected in forward-looking statements are based upon reasonable assumptions, and
that information obtained from third party sources is reliable, they can give no assurance that those
expectations will prove to have been correct. Readers are cautioned not to place undue reliance on
forward-looking statements.
These forward-looking statements are subject to a number of risks and uncertainties. Such risks and
uncertainties include, without limitation: risks associated with exploration and development activities;
uncertainty in the interpretation of drilling, sampling and assay results; geological, technical and
metallurgical risks; the possibility that future exploration results will not confirm expectations; uncertainty
regarding the extent and continuity of mineralization; risks associated with the use and verification of
historical data; fluctuations in commodity prices; changes in market conditions; risks relating to
permitting and regulatory approvals; environmental and community relations risks; financing risks; and
general economic, business and political risks. Actual results may differ materially from results
contemplated by the forward-looking statements. Accordingly, the actual events may differ materially
from those projected in the forward-looking statements. Such risks include uncertainties relating to
exploration activities. When relying on forward-looking statements to make decisions, investors and
others should carefully consider the foregoing factors and other uncertainties and should not place undue
reliance on such forward-looking statements. The Company does not undertake to update any forward-
looking statements, except as may be required by applicable securities laws.
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