Dore Copper Announces Its Drilling Plans FOR Joe MANN and Doré RAMP Exploration Target
PRESS RELEASE
DORE COPPER ANNOUNCES ITS DRILLING PLANS FOR JOE MANN AND DORÉ
RAMP EXPLORATION TARGET
Toronto, Ontario – September 12, 2022 – Doré Copper Mining Corp. (the " Corporation" or " Doré
Copper") (TSXV: DCMC; OTCQ X: DRCMF; FRA: DCM) is pleased to announce its plan to drill at Joe
Mann, part of the preliminary economic assessment (“PEA”), and at the Doré Ramp gold-copper deposit
located 2.5 kilometers from the existing Copper Rand mill, near Chibougamau, Québec (Figure 1). This
drilling is expected to start in the fourth quarter and is in addition to the ongoing infill drill program at Corner
Bay and Devlin for the upcoming feasibility study (latest news release August 11, 2022).
Earlier this summer, at the Doré Ramp exploration target, Doré Copper completed o ne diamond drill hole
(LDR-22-01) and intersected two veins with one grading 4.37% Cu, 0.87 g/t Au and 13.0 g/t Ag over 2.4
meters, including 17.6% Cu, 1.76 g/t Au and 43.90 g/t Ag over 0.5 meter, at a vertical depth of 880 meters,
which is approximately 500 meters deeper than the historical estimate (Figure 2). This hole indicates the
potential to extend the currently known Doré Ramp m ineralized system at depth. This initial drilling plan
consists of four wedge cuts from hole LDR-22-01 to test for vein extensions and new veins.
Joe Mann Deposit
Doré Copper’s drilling plan for the fall is to extend the plunge of a mineralized shoot in the Main Zone at
depths between 1,100 and 1,300 meters. Pending the results, a more detailed drilling plan will be designed
to further upgrade and expand the current mineral resources. The Corporation has an option agreement to
acquire 100% of the Joe Mann property by January 2, 2023 (news release January 2, 2020).
In the PEA released on May 10, 2022, the former Joe Mann gold mine is one of the three projects feeding
the Copper Rand mill in its hub-and-spoke operation model. The mine produced a total of 1,173,238 ounces
of gold, 28.7 million pounds of copper, and approximately 607,000 ounces of silver from 1956 to 2007 (4.75
million tonnes grading 8.26 g/t Au, 0.25% Cu and 5 .0 g/t Ag) 1. The current mineral resource s stand at
680,000 tonnes averaging 6.78 g/t Au and 0.24% Cu (133,000 ounces) in the inferred category and are
located in eastern part of the Main Zone and the West Zone at depths below 870 meters ( news release
July 28, 2021 and Technical report June 15, 20222).
Doré Ramp Deposit
The immediate vicinity of the Copper Rand mill is showing strong potential for the discovery of new copper
and gold mineralization . The Doré Ramp deposit (previously called Lac Doré Ramp) is within the
Chibougamau Central mining camp and as many other deposits and mineral occurrences it is within a wide
(from 100 to 400 meters) shear zone perpendicular to the Lac Doré fault. In the Chibougamau Central
camp, the copper and gold -rich mineralized zones are in contact with acidic to intermediate dykes
interpreted as coming from the Chibougamau Pluton. The Doré Ramp deposit starts at 80 m eters below
surface and has been tested over a strike length of approximately 500 m etres. It consists of a series of
subparallel pinch and swell veins, varying in thickness from 0.3 to 7.7 meters, that extend from 150 to 300
meters along strike. A number of mineralized lenses are displaced by northeast faults at 15 to 30 m etres
intervals.
The Doré Ramp deposit was drilled in a few different phases from 1984 to 1992. A total of 47 drill holes
from surface are reported during that period. A double ramp of approximately 1 kilometer was excavated in
1991-92 to a vertical depth of 160 meters, followed by an underground drilling campaign of 46 holes totaling
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10,200 met ers testing the deposit mainly to a depth of 240 meters (only five holes tested the deposit
between 300 and 600 meters). At the end of 1992, Wes tminer Canada reported a historical estimate of
209,120 tonnes at 1.23% Cu and 5.4 g/t Au, from a depth of 115 meters (surface pillar limit) to 350 meters
(Source: Westminer Canada Limit ed, Project Lac Dor é, November 1992 ). This estimate is considered to
be historical in nature and should not be relied upon. A Qualified Person has not completed sufficient work
to classify the historical estimate as a current mineral resource or mineral reserve. The Company is not
treating the historical estimate as current mineral resources or mineral reserves) . No subsequent
exploration programs were carried out on the Doré Ramp deposit. The deposit remains open at depths
below 400 meters and along strike towards the Lac Doré fault.
The Doré Ramp deposit has several geological and mineralization characteristics similar to the past
producing Copper Rand and Cedar Bay mines. The Copper Rand mine is the largest past producing mine
in the Central Chibougamau mining camp having produced 1.5 million ounces of gold and 0.5 billion pounds
of copper from 1959 to 2008 (16.4 million tonnes at an average grade of 1.8% Cu and 2.8 g/t Au )1. From
surface, the mineralization at Copper Rand and Doré Ramp begins at 450 meters from the Doré Lake fault
and plunges to the west (Figure 2). At Copper Rand, at depths below 650 meters, the mineralization extends
next to the contact with the Doré Lake fault. This conceptual target has never been tested at the Doré Ramp
deposit. With the first deeper hole (LDR -22-01) having intersected copper -gold mineralization, the next
drilling phase will indicate if the mineralization system extends up dip along strike.
Doré Ramp North Zone
The Doré Ramp North Zone is located 450 meters northeast of the Doré Ramp deposit and is defined by a
shear corridor parallel to the Doré Ramp shear. Information collected from 11 historical drill holes targeting
the Doré Ramp North show similar mineralization to the Doré Ramp. The best intersections reported were
2.13% Cu and 1.25 g/t Au over 2.3 metres (hole S4-91-6) and 1.43% Cu and 1.68 g/t Au over 2.75 metres
(hole S4-91-9) (Source: Westminer Canada Limited, drill logs March 1991). Doré Copper intends to follow
up on this target after completing the drilling program at the Doré Ramp and continue its compilation work
on the area around the large Copper Rand property in the Central Chibougamau Camp.
Figure 1. Location map of the Doré Ramp and Doré Ramp North shear zones with respect to the past
producing Copper Rand mine and mill and Cedar Bay mine.
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Figure 2. Long sections of Copper Rand mine and Doré Ramp showing similarities of the two deposits.
Drilling and Quality Control
The Company is using Miikan Drilling as the drilling contractor. Miikan is a joint venture between
Chibougamau Diamond Drilling Ltd., the First Nations community of Ouje-Bougoumou and the First Nations
community of Mistissini both located in the Eeyou Istchee territory.
Sample preparation and analysis are completed at AGAT Laboratories in Mississauga, Ontario. For AGAT,
samples are weighed, dried, crushed to 75% passing 2 mm, split to 250 g, and pulverized to 85% passing
75 microns. Samples are then fire assayed for Au (50 g) and 4 acid digest ICP-OES finish for 43 elements.
QA/QC is done in house by Doré Copper Geologists with oversight from the Vice President Exploration.
The check samples (blanks and standards – 4% of total samples with another 2% of core duplicates) that
were inserted into the sample batches are verified against their certified values and are deemed a pass if
they are within 3 standard deviations of the certified value. The duplicates are evaluated against each other
to determine mineralization distribution (nugget). If there are large discrepancies in the check samples, then
the entire batch is requested to be re-assayed.
Sylvain Lépine, M.Sc, P.Geo., Vice President Exploration of the Corporation and a "Qualified Person" within
the meaning of National Instrument 43-101, has reviewed and approved the technical information contained
in this news release.
About Doré Copper Mining Corp.
Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target
of +50 million pounds of copper equivalent annually by implementing a hub -and spoke operation model
with multiple high-grade copper-gold assets feeding its centralized Copper Rand mill1. The Corporation has
delivered its PEA in May 2022 and plans to commence a feasibility study and submit the Preliminary
Information Statement of the Environmental and Social Impact Assessment (ESIA) in Q3 2022.
The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe
Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold 2. The
land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometer
radius of the Corporation’s Copper Rand Mill.
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For further information, please contact:
Ernest Mast Laurie Gaborit
President and Chief Executive Officer Vice President, Investor Relations
Phone: (416) 792-2229 Phone: (416) 219-2049
Email: [email protected] Email: [email protected]
Visit: www.dorecopper.com
Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining
1. Sources for historic production figures: Economic Geology, v. 107, pp. 963 –989 - Structural and Stratigraphic Controls on
Magmatic, Volcanogenic, and Shear Zone -Hosted Minerali zation in the Chapais -Chibougamau Mining Camp, Northeastern
Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43 -101 Technical Report on the Joe
Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).
2. Technical report titled "Preliminary Economic Assessment for the Chibougamau Hub -and-Spoke Complex, Québec, Canada"
dated June 15, 2022, in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”).
The Technical Report was prepared by BBA Inc. with several consulting firms contributing to sections of the study, including SLR
Consulting (Canada) Ltd., SRK Consulting (Canada) Inc. and WSP Inc.
Cautionary Note Regarding Forward-Looking Statements
This news releas e includes certain "forward -looking statements" under applicable Canadian securities legislation.
Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by
the use of words such as "seek", "antic ipate", "believe", "plan", "estimate", "forecast", "expect", "potential", "project",
"target", "schedule", "budget" and "intend" and statements that an event or result "may", "will", "should", "could" or
"might" occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking
statements in this press release include, but are not limited to drilling Joe Mann and Lac Dor é Ramp in the fourth
quarter of 2022, aiming to be the next copper producer in Québec with an initial production target of +50 million pounds
of copper equivalent annually; implementing a hub-and spoke operation model; plans to commence a feasibility study
and submit the Preliminary Information Statement of the Environmental and Social Impact Assessment ( ESIA) in Q3
2022.
All statements other than statements of historical fact included in this release, including, without limitation, statements
regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations
and prospects of the Corporation and its properties are forward -looking statements. Forward-looking statements are
necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to
known and unknown risk s, uncertainties and other factors which may cause actual results and future events to differ
materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited
to, actual exploration results, changes i n project parameters as plans continue to be refined, future metal prices,
availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured
risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics
and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with
securities regulators. Although the Corporation has attempted to identify importa nt factors that could cause actual
actions, events or results to differ from those described in forward-looking statements, there may be other factors that
cause such actions, events or results to differ materially from those anticipated. There can be no a ssurance 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. The
Corporation disclaims any intention or obligation to update or revise any forward -looking statements, whether as a
result of new information, future events or otherwise, except as required by law.
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
news release.