December 19, 2016   
 
 
Fellow Investors,
 
I want to start with the one word that I feel best encapsulates not just this past year, but our entire history as a company: “credibility”. We believe that the way to create genuine value is by setting realistic goals and then delivering on those goals. As we head into our final year of development, our business model will continue to reflect a company that knows exactly what needs to be done in order to achieve all of our goals.
 
At the start of 2016 we set ourselves some very significant targets. In every case, we achieved those targets and met our budgetary expectations, all of which proved accretive to our market capitalization.
 
Some of the significant milestones from this past year included:

• Full integration of the Johnson Camp Mine into our company; the facility remains in good working order and will allow us to commence production via a low-cost, staged, ramp-up;
• Filed state and federal permits that are progressing well through the regulatory process;
• Raised significant capital at a premium to our then market price; these funds are expected to see us well past the targeted construction decision;
• Completed an Updated Prefeasibility Study and a Feasibility Study; both of theses technical reports highlight the industry-leading low operating costs, low capital costs and small environmental footprint that should make our project one of the most attractive new copper mines in the world.

These accomplishments reflect the quality of our management team. We have the experience and business acumen necessary to take the Gunnison Copper Project into full production, and that is exactly what we intend to do.   
 
The next big milestone ahead of us will be the receipt of operating permits. Permitting is one of the biggest issues facing a pre-production project, and we remain very confident that our operating permits will be received in keeping with our track record of achieving milestones on time and on budget. We are very proud of the quality of our community out-reach program, which we initiated over five years ago. Additionally, we know that our permitting team, led by VP Sustainability, Rebecca Sawyer, has the capacity and experience to deliver on this key milestone.
 
I offer my appreciation for all of our investors and stakeholders who have maintained their support. Heading into the New Year, our goals remain the same: we are working towards a resounding technical and market success. There is no reason why we cannot accomplish both and we will be satisfied with nothing less.
 
Kind Regards,
Stephen Twyerould
Present & Chief Executive Officer
 
 
 
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.
 
Further information about the Gunnison Copper Project can be found in the Company’s news release dated December 5, 2016 filed on SEDAR at www.sedar.com. 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 letter.
 
For more information on Excelsior, please visit our website at 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, statements with respect to: (i) the low-cost nature of the Gunnison Project; (ii) the commencement of commercial production from the Gunnison Project; (iii) the timelines associated with the permitting process; (iv) the issuance of permits for the Gunnison Project; (v) that the Gunnison Project will be environmentally friendly;  and (vi) 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 exploration and 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 explore and develop the Gunnison Project in the short and long-term, the progress of exploration and 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.