Toronto - Dore Copper Mining Corp. (the 'Corporation' or 'Dore Copper') (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce positive results from recent sample test work aimed at determining the effectiveness of utilizing ore sorting technology to improve the processed grade and reduce the mill feed tonnage for its flagship Corner Bay high-grade copper-gold project located approximately 55 kilometers by road from the Corporation's Copper Rand mill, near Chibougamau, Quebec.

Highlights of Ore Sorting Test

Sample taken from the development mineralized material stockpiled at surface which was extracted during the preparation of the 2008 bulk sample

Results indicate that the grade of the pre-concentrate tested with the ore sorter increased 2.6x, from 2.66% Cu to 6.84% Cu, with a recovery of 95.5% Cu by utilizing an X-ray transmission (XRT) sensor at Corem's test facility in Quebec City

Reject material contained 62.8% of the initial mass and had a copper grade of 0.19%

In practice, a higher recovery would be expected as fine materials from the mining and crushing operations would join the ore sorter pre-concentrate

About Corem

Corem is a center of expertise and innovation in mineral processing with the largest concentration of resources dedicated to research and development in this field in Canada. Corem is a not-profit organization that works closely with its members, its clients, and its partners to improve competitiveness and to reduce environmental impact through the industrialization of innovative solutions. Corem has extensive equipment and infrastructure, including a pilot plant and laboratories for grinding, physical separation (gravimetric and magnetic), flotation, extractive metallurgy, hydrometallurgy, pelletizing, thermal treatment processes as well as mineralogical characterization.

About Dore Copper Mining Corp.

Dore Copper Mining Corp. aims to be the next copper producer in Quebec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA by the end of the first quarter of 2022 and then initiate a feasibility study and permit applications.

The Corporation has consolidated a large land package in the prolific Lac Dore/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation's Copper Rand Mill.

Contact:

Ernest Mast

Tel: (416) 792-2229

Email: emast@dorecopper.com

Cautionary Note Regarding Forward-Looking Statements

This news release 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', 'anticipate', '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, higher copper recovery would be expected as fine materials from the mining and crushing operations would join the ore sorter pre-concentrate; expectations that ore sorting could also be successful at Devlin; future development work will include additional ore sorting tests in different areas of the deposits; planning to have the preliminary economic assessment (PEA) completed by the end of the first quarter of 2022; incorporating an updated mineral resource for Corner Bay; expecting to have all drill results in January; area between the Main Zone (below the dyke) and the Lower Deep Vein expected to add significant tonnage; potential to reduce operating and capital costs with ore sorting technology; aiming to be the next copper producer in Quebec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model; initiating a feasibility study and permit applications after the PEA.

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 risks, 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 in 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 important 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 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. 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.

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