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Excelsior Files Preliminary Base Shelf Prospectus

Financings

Not for dissemination or distribution in the United States or through U.S. newswire services.

NEWS RELEASE

Excelsior Files Preliminary Base Shelf Prospectus

November 16, 2017

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

pleased to announce that it has filed a preliminary base shelf prospectus (the "Shelf Prospectus") with

the securities regulatory authorities in each of the provinces of Canada (other than Quebec).

The Shelf Prospectus, when made final, will enable Excelsior to make offerings of up to US$30,000,000

of any combination of common shares, debt securities, subscript ion receipts, units, warrants and share

purchase contracts, during the 25-month period that the Shelf P rospectus, including any amendments

thereto, remains valid. The nature, size and timing of any such financings (if any) will depend, in part, on

Excelsior's assessment of its requirements for funding and gene ral market conditions. Unless otherwise

specified in the prospectus supplement relating to a particular offering of securities, the net proceeds

from any sale of any securities will be used for working capita l requirements and for the development,

construction and maintenance of the Company’s mineral propertie s. The specific terms of any future

offering will be established in a prospectus supplement to the Shelf Prospectus, which supplement will

be filed with the applicable Canadian securities regulatory authorities.

A copy of the Shelf Prospectus is available on SEDAR (www.sedar .com) and also may be obtained by

contacting the Corporate Secretary of the Company at 1240 – 114 0 West Pender Street, Vancouver,

British Columbia, Canada, V6E 4G1, telephone (604) 681-8030.

The common shares, debt securities, subscription receipts, units, warrants and share purchase contracts

have not been, nor will they be, registered under the United St ates Securities Act of 1933, as amended

and may not be offered or sold in the United States or to, or f or the account or benefit of, U.S. persons

absent registration or an applicable exemption from the registration requirements. This news release will

not constitute an offer to sell or the solicitation of an offer to buy nor will there be any sale of the securities

in any State in which such offer, solicitation or sale would be unlawful.

About Excelsior Mining

Excelsior Mining “ The Copper Solution Company ” is a mineral exploration and development company

that is advancing the Gunnison Copper Project in Cochise County, Arizona.

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

ON BEHALF OF THE EXCELSIOR BOARD

"Stephen Twyerould"

President & CEO

2

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: 604-681-8030 x240

E: [email protected]

www.excelsiormining.com

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, stat ements with respect to: (i) information pertaining to the

Company's filing of the Shelf Prospectus, (ii) regulatory approv al of the Shelf Prospectus and (iii) any potential future offer ing(s) of securities

pursuant to the Shelf Prospectus (and the use of proceeds therefor).

In certain cases, forward-looking information can be identified by the use of words such as "plans", "expects" or "does not expect", "is expected",

"budget", "scheduled", "estimates", "forecasts ", "intends", "anticipates" or "does not anticipate", or "believes", or variation s of such words and

phrases or state that certain actions, events or results "may ", "could", "would", "m ight" or "will be taken", "occur" or "be ac hieved" suggesting

future outcomes, or other expectations, be liefs, plans, objectives, assumptions, intent ions or statements about future events o r performance.

Forward-looking information contained in th is news release is based on certain factor s and assumptions regarding, among other t hings, 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 development expenditures, the estimation of initial and sustaining capital requirements, the estimation of labour and

operating costs, the availability of necessary financing and materials to continue to develop and construct the Gunnison Project in the short and

long-term, the progress of development activities, the receipt of necessary regulatory approvals, the completion of the permitt ing process, the

estimation of insurance coverage, and assumptions with respect to currency fluctuations, environmental 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 imp lied by the

forward-looking information. Such factors include risks inherent in the exploration an d development of mineral deposits, including risks relating

to changes in project parameters as plans continue to be redefi ned including the possibility that mining operations may not com mence at the

Gunnison Project, risks relating to variations in mineral resources and reserves, grade or recovery rates resulting from curren t exploration and

development activities, risks relating to the ability to access infrastructure, risks relating to changes in copper and other c ommodity prices and

the worldwide demand for and supply of copper and related products, risks related to increased competition in the market for copper and related

products and in the mining industry generally, risks related to curr ent global financial conditions, uncertainties inherent in the estimation of

mineral resources, access and supply risks, reliance on key per sonnel, operational risks inherent in the conduct of mining acti vities, 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 development process, regulatory risks, including risks relating to the acqui sition of the necessary licenses and per mits, financing,

capitalization and liquidity risks, including the risk that the financing necessary to fund the exploration and development activities at the Gunnison

Project may not be available on satisfactory terms, or at all, risks related to disputes concerning property titles and interest, 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 t hat could cause actual actions, events or results to differ m aterially from

those described in forward-looking information, there may be other factors that cause actions, events or results not to be as anticipated, estimated

or intended. Accordingly, readers should not place undue reliance on forward- looking information. The forward-looking informati on is made as

of the date of this news release. Except as required by applicable securi ties laws, the Company does not undertake any obligati on to publicly

update or revise any forward-looking information.