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Excelsior Mining to Provide Update at PI Financial Corp Conference

Marketing Announcement

26427809.2

NEWS RELEASE

Excelsior Mining to Provide Update at PI Financial Corp Conference

June 22, 2021

Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQX: EXMGF) ("E xcelsior" or the “Company”)

announces that President & CEO, Stephen Twyerould, will present at the Copper Up virtual conference

hosted by PI Financial Corp on Thursday, June 24 th at 1pm (Pacific Time). Those wishing to participate

in the webinar can do so by registering here.

Topics to be covered during the presentation will include:

 Operations Update.

 Confirmation of improving fluid flow rates as per the on-going wellfield optimization program.

 Discussion of the Gunnison Project’s environmental attributes as they relate to ESG.

About Excelsior Mining

Excelsior “The Copper Solution Company ” is a mineral exploration and production company that owns

and operates the Gunnison Copper Project in Cochise County, Ari zona. The project is a low cost,

environmentally friendly in-situ recovery copper extraction project that is permitted to 125 million pounds

per year of copper cathode production. The Feasibility Study pr ojected an after-tax NPV of US$ 807

million and an IRR of 40% using a US$ 2.75 per pound copper price and a 7.5% discount rate.

Excelsior’s technical work on the Gunnison Copper Project is supervised by Stephen Twyerould, Fellow

of AUSIMM, President & CEO of Excelsior and a Qualified Person as defined by National Instrument 43-

101. Mr. Twyerould has reviewed and approved the technical information contained in this news release.

Additional information about the Gunnison Copper Project can be found in the technical report filed on

SEDAR at www.sedar.com entitled: “Gunnison Copper Project, NI 4 3-101 Technical Report, Feasibility

Study” dated effective December 17, 2016.

For more information on Excelsior, please visit our website at www.excelsiormining.com.

For further information regarding this press release, please contact:

Excelsior Mining Corp.

Concord Place, Suite 300, 2999 North 44th Street, Phoenix, AZ, 85018.

JJ Jennex, Vice President, Corporate Affairs

T: 604 723 1433

E: [email protected]

www.excelsiormining.com

Cautionary Note Regarding Forward-Looking Information

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This news release contains "forward-looking information" concerning anticipated developments and events that may

occur in the future. Forward looking information contained in this news release includes, but is not limited to,

statements with respect to: (i) the results of the Feasibility Study, including operating and capital cost estimates and

the economic benefits from the Gunnison Copper Project; (ii) the details of the operations plan; (iii) the timeline to

a 25 million pound per annum production rate; and (iv) expectations for the resolution of carbon dioxide issues and

increased flow rates.

In certain cases, forward-looking information can be identif ied by the use of words such as "plans", "expects" or

"does not expect", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate",

or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could",

"would", "might", "occur" or "be achieved" suggesting fu ture outcomes, or other expectations, beliefs, plans,

objectives, assumptions, intentions or statements about future events or performance. Forward-looking information

contained in this news release is based on certain fa ctors and assumptions regardi ng, among other things, the

estimation of mineral resources and mineral reserves, t he realization of resource and reserve estimates,

expectations and anticipated impact of the COVID-19 outbreak, copper and other metal prices, the timing and

amount of future development expenditures, the estimati on of initial and sustaining capital requirements, the

estimation of labour and operating costs (including the price of acid), the availability of labour, material and acid

supply, receipt of and compliance with necessary regulatory approvals, the estimation of insurance coverage, and

assumptions with respect to currency fluctuations, environm ental risks, title disputes or claims, and other similar

matters. While the Company considers these assumptions to be reasonable based on information currently

available to it, they may prove to be incorrect.

Forward looking information involves known and unknown risks, uncertainties and other factors which may cause

the actual results, performance or achievements of the Company to be materially different from any future results,

performance or achievements expressed or implied by the forward-looking information. Such factors include risks

inherent in the construction of mineral deposits, including risks relating to changes in project parameters as plans

continue to be redefined including the possibility that mining operations may not be sustained at the Gunnison

Copper Project, risks relating to variations in mineral resources and reserves, grade or recovery rates, risks relating

to the ability to access infrastructure, risks relating to changes in copper and other commodity prices and the

worldwide demand for and supply of copper and related prod ucts, risks related to increased competition in the

market for copper and related products, ri sks related to current global financial conditions, risks related to current

global financial conditions and the impact of COVID-19 on the Company’s business, uncertainties inherent in the

estimation of mineral resources, access and supply risks, risks related to the ability to access acid supply on

commercially reasonable terms, reliance on key personnel, operational risks inherent in the conduct of mining

activities, including the risk of accidents, labour disputes, increases in capital and operating costs and the risk of

delays or increased costs that might be encountered during the construction proc ess, regulatory risks, financing,

capitalization and liquidity risk s, risks related to disputes concerning pr operty titles and interests, environmental

risks and the additional risks identified in the “Risk Factors” section of the Company’s reports and filings with

applicable Canadian securities regulators.

Although the Company has attempted to identify important factors that could cause actual actions, events or results

to differ materially from those described in forward-look ing information, there may be other factors that cause

actions, events or results not to be as anticipated, esti mated or intended. Accordingl y, readers should not place

undue reliance on forward-looking information. The forward-looking information is made as of the date of this news

release. Except as required by applicable securities laws, the Company does not undertake any obligation to

publicly update or revise any forward-looking information.