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Excelsior Mining Completes Copper Cathode Offtake Agreement

Mine Development & Operations Partnerships & JV

26427809.2

NEWS RELEASE

Excelsior Mining Completes Copper Cathode Offtake Agreement

March 11, 2020

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

is pleased to announce that the Company has entered into a purchase and sale agreement (the “Offtake

Agreement”) with Trafigura Trading LLC (“ Trafigura”) for 100% of copper cathode production during

2020 from the Gunnison Copper Project in Southern Arizona. The Offtake Agreement has been

concluded on commercially competitive terms. The Company is for ecasting first copper production in

Q2 of this year

Trafigura Group Pte. Ltd. is a market leader in the global comm odities industry and one of the largest

and most active trading houses in the United States. Trafigura's core business is the physical trading of

oil and petroleum products and metals and minerals, and their t ransportation across the globe. The

company’s assets and investments complement and enhance these a ctivities. Headquartered in

Singapore, Trafigura’s 8,000 employees operate from 80 offices across 41 countries.

About Excelsior Mining

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

the Gunnison Copper Project in Cochise County, Arizona. The pro ject is a low cost, environmentally

friendly in-situ recovery copper extraction project that is per mitted to 125 million pounds per year of

copper cathode production. The Feasibility Study projected an a fter-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

26427809.2

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Cautionary Note Regarding Forward-Looking Information

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 schedule for production and first copper cathode

sales; (iii) the sale of copper cathode to Trafigura; and (iv) the ability to mine the Gunnison Copper Project using in-

situ recovery mining techniques.

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, the realization of resource and reserve estimates, copper

and other metal prices, the timing and amount of future de velopment expenditures, the estimation of initial and

sustaining capital requirements, the estimation of labour and operating costs, the progress of construction activities,

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 commence 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 products, ri sks related to increased competition in the market for

copper and related products, risks related to current global financial conditions, uncertainties inherent in the

estimation of mineral resources, acce ss and supply risks, reliance on key pers onnel, operational risks inherent in

the conduct of mining activities, including the risk of acci dents, labour disputes, increases in capital and operating

costs and the risk of delays or increased costs that might be encountered during the construction process, regulatory

risks, financing, capitalization and liquidi ty risks, risks related to disputes concerning property 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.