VANCOUVER, BC --(Marketwired - June 14, 2017) - Excelsior Mining
Corp. (TSX: MIN) (FRANKFURT: 3XS) (OTCQX: EXMGF) ("Excelsior" or the "Company") is pleased to announce that
the Arizona Department of Environmental Quality ("ADEQ") has issued a draft operating permit, the Aquifer Protection Permit
("APP"), for the Gunnison Copper Project, located in Cochise County, southeastern Arizona. The draft APP will remain open for
public comment for a minimum of 30 days. The timing of the issuance of the final APP is subject to this public comment
period.
"The ADEQ's decision to issue our draft APP for public comment is a substantial step forward in advancing the Gunnison Copper
Project; a project that will bring enormous economic benefits to the state and local communities, whilst maintaining the highest
environmental and safety standards," added Stephen Twyerould, President and CEO. "We look forward to continuing our work with the
ADEQ, the Environmental Protection Agency ("EPA"), local communities and other stakeholders to successfully complete the
permitting process in advance of commercial production, which remains on schedule for 2018."
Excelsior AGM
Excelsior is also pleased to announce that it has received Toronto Stock Exchange ("TSX") approval to hold its annual general
meeting ("AGM") on September 8, 2017, outside of the TSX requirement that a company hold an AGM within six months of its year
end. As Excelsior just completed its TSX listing in February 2017 and held its last AGM on October 27, 2016, the TSX accepted an
extended timeline for the 2017 AGM.
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. The project is an advanced staged, low cost, environmentally friendly in-situ
recovery copper extraction project that is scheduled for commercial production in 2018.
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 43-101 Technical Report, Feasibility Study" dated effective
December 17, 2016.
For more information on Excelsior, please visit our website at www.excelsiormining.com.
ON BEHALF OF THE EXCELSIOR BOARD
"Stephen Twyerould"
President & CEO
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 timeline for, and the completion of, the permitting process; (ii) economic benefits from the Gunnison Project; (iii)
the commencement of commercial production from the Gunnison Project; and (iv) the ability to mine the Gunnison Project using
in-situ recovery mining techniques.
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 variations of such words and phrases or state that certain actions, events or results "may", "could", "would",
"might" or "will be taken", "occur" or "be achieved" suggesting future 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 factors and assumptions regarding, 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 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 permitting 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 implied by the forward-looking information. Such factors include risks inherent in the exploration and
development 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 Project, risks relating to variations in
mineral resources and reserves, grade or recovery rates resulting from current exploration and development activities, 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, risks related to increased competition in the market for copper
and related products and in the mining industry generally, risks related to current global financial conditions, uncertainties
inherent in the estimation of mineral resources, access and supply risks, 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 development process, regulatory risks, including
risks relating to the acquisition of the necessary licenses and permits, 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 that could cause actual actions, events or results to
differ materially 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 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.
Neither the 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 release, and no securities regulatory authority has
either approved or disapproved of the contents of this release.