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"Please read our cautionary notes to investors before proceeding."

The following are important notices for all investors regarding the information contained on this website. Please read these Cautionary Notes carefully and thoroughly.

EurGeol Dr. Mark D. Cruise, Trevali's President and CEO, and a qualified person as defined by NI 43-101, has reviewed the scientific and technical information that forms the basis for this presentation. Dr. Cruise is not independent of the Company as he is an officer, director and shareholder.

Trevali's production plan at the Caribou Mine is based only on measured, indicated and inferred mineral resources, and not mineral reserves, and does not have demonstrated economic viability. Trevali’s production plans at the Perkoa Mine, Rosh Pinah Mine and Santander Mine are based on both proven and probable reserves and on measured, indicated and inferred mineral resources; mineral resources by definition do not have demonstrated economic viability. Inferred mineral resources are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is therefore no certainty that the conclusions of the production plans and Preliminary Economic Assessment (PEA) will be realized. Additionally, where Trevali discusses exploration/expansion potential, any potential quantity and grade is conceptual in nature and there has been insufficient exploration to define a mineral resource and it is uncertain if further exploration will result in the target being delineated as a mineral resource.

The Santander resource estimate was independently estimated by the Company’s consultant Arseneau Consulting Services Ltd. The resource estimates were prepared by and under the supervision of Dr. Gilles Arseneau, an appropriate "independent qualified person" as this term is defined in National Instrument 43-101. Dassault Systemes Geovia Gems version 6.7 (Gems) software was used to review and modify the geological solids provided by Trevali, prepare assay data for geostatistical analysis, construct the block model, estimate metal grades and tabulate mineral resources. The Geostatistical Software SAGE2001 was used for geostatistical analysis and variography. A cut-off-grade of US$40 was utilized which is the nominal base-case estimated grade of material that can be mined and processed considering all applicable costs. For reference, the Company’s Santander 2017 site cash cost guidance (mining, milling and site G&A) is US$35-$40 per tonne. The mineral resources identified in Table 1 are based on Ordinary Kriged (OK) capped values inside 5-by-5-by-5-metre blocks for the Magistral deposits and 10-by-10-by-5-metre blocks for the Puajanca and Santander Pipe deposits. Assays were capped prior to compositing and assays were composited to 2 metres for the Magistral and Puajanca deposit and 3.5 metres for the Santander deposit. Resource estimates for Santander Pipe and Puajanca South are unchanged from 2012 but have been updated to reflect 2016 metal prices. The US dollar value cut-off is based on the formula:

Dollar Value = ((Ag Price x Ag Recovery x Ag Grade) + (Pb Price x Pb Recovery x Pb Grade)+(Zn Price x Zn Recovery x (Zn Grade)). Price for silver is ($16.50/oz) and that for Pb ($0.95), Zn ($1.15) and Cu ($2.50) is per pound. A recovery of 74% was applied to Ag, 85% for Pb, 89% for Zn and 0% for Cu for calculating the dollar value formula. Santander zinc equivalent is calculated by dividing the dollar value by the zinc price.

Caribou resource estimate was completed by SRK Consulting (Canada) Inc. in January 2013. The tabled resource estimate utilizes a 5% zinc equivalent (ZnEQ) cut-off grade. ZnEq=((Cu Grade*Cu Price*Cu Recovery)+(Pb Grade*Pb Price*Pb Recovery)+(Zn Grade*Zn Price*Zn Recover)+(Au Grade*Au Price*Au Recovery)+(Ag Grade*Ag Price*Ag Recovery))/Zn Price. In calculating ZnEq, SRK Consulting (Canada) Inc. utilized the long term metal prices provide by Energy & Metals Consensus Forecast. Price for Au is $1470 per ounce, Ag is $26 per ounce, Cu is $3.39 per pound, Pb is $1.18 per pound, and Zn is $1.14 per pound. A recovery of 83% was applied to Zn, 71% was applied to Pb, 57% was applied to Cu, 45% was applied to Ag, and 40% was applied to Au. The pounds of metal are in-situ and have not had any mining factors applied to them.

Caribou PEA study was conducted in accordance with the definitions in Canadian National Instrument 43-101. SRK Consulting (Canada) Inc. was the lead independent consultant, with contributions from other independent consultants commissioned by Trevali – Holland & Holland Consulting and Stantec Consulting. The base case Caribou Mine Project PEA uses price assumptions of US$1.00/lb zinc, US$1.00/lb lead, US$3.00/lb copper, US$21.00/oz silver and US$1,200/oz gold. These prices are based on a review of consensus price forecasts from financial institutions and similar studies that recently have been published. The PEA is considered preliminary in nature and includes economic analysis that is based, in part, on inferred mineral resources. Inferred mineral resources are considered too speculative geologically to have the economic considerations applied to them that would allow them to be categorized as mineral reserves, and there is no certainty that the results will be realized. Mineral resources are not mineral reserves because they do not have demonstrated economic viability.

Halfmile Deposit resource estimate completed by Tetra Tech Wardrop and prepared by Tim Maunula, P.Geo. and Christopher Moreton, Ph.D., P.Geo.

Stratmat Deposit resource estimate completed by SRK Consulting (Canada) Inc. and prepared by Dr. Gilles Arseneau, P.Geo.

Ruttan resource estimate was completed by Tetra Tech Wardrop in February 2008. The resource estimate utilized a 1% copper equivalent (CuEQ) cut-off.

Forward-Looking Statements

This discussion and disclosure on this website contains forward-looking statements within the meaning of Section 27A of the United States Securities Act and Section 21E of the United States Securities Exchange Act of 1934 concerning the Company's plans for its properties, operations and other matters. These statements include, without limitation, statements regarding future anticipated property acquisitions, the cost, timing and content of future exploration programs, anticipated exploration program results, the discovery and delineation of mineral deposits/resources/reserves, business and financing plans, potential mining scenarios, the success of mineral processing procedures, business trends and future operating costs and revenues and may relate to analyses and other information that are based on forecasts of future results, estimates of amounts not yet determinable and assumptions of management. Information concerning mineral resource estimates also may be deemed to be forward-looking statements in that it reflects a prediction of the mineralization that would be encountered if a mineral deposit were developed and mined. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always, using words or phrases such as "expects" or "does not expect", "is expected", "anticipates" or "does not anticipate", "plans", "estimates", "believes" or "intends", or stating that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved) are not statements of historical fact and may be "forward-looking statements". Forward-looking statements are subject to a variety of risks and uncertainties, which could cause actual events or results to differ from those reflected in the forward-looking statements, including, without limitation:

  • risks related to zinc, lead and silver prices and other commodity price fluctuations;
  • risks and uncertainties relating to the interpretation of drill results, the geology, grade and continuity of mineral deposits;
  • risks related to the inherent uncertainty of production and cost estimates and the potential for unexpected costs and expenses;
  • results of initial feasibility, prefeasibility and feasibility studies, and the possibility that future exploration, development or mining results will not be consistent with the Company's expectations;
  • mining and development risks, including risks related to accidents, equipment breakdowns, labour disputes or other unanticipated difficulties with or interruptions in production;
  • the potential for delays in exploration or development activities or the completion of feasibility studies;
  • the uncertainty of profitability based upon the Company's history of losses;
  • risks related to failure to obtain adequate financing on a timely basis and on acceptable terms;
  • risks related to environmental regulation and liability;
  • risks related to hedging activities;
  • political and regulatory risks associated with mining and exploration; and other risks and uncertainties related to the Company's prospects, properties and business strategy.

Should one or more of these risks and uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in forward-looking statements. Forward looking statements are made based on management's beliefs, estimates and opinions on the date the statements are made and the Company undertakes no obligation to update forward-looking statements if these beliefs, estimates and opinions or other circumstances should change. Investors are cautioned against attributing undue certainty to forward-looking statements.

Readers are cautioned that the assumptions used in the preparation of such information, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, undue reliance should not be placed on forward-looking statements. The actual results, programs and financial position of Trevali Mining Corporation could differ materially from those expressed in or implied by these forward-looking statements, and accordingly, no assurance can be given that the events anticipated by the forward-looking statements will transpire or occur, or if any of them do so, what benefits the Company will derive therefrom.

All of the Company's Canadian public disclosure filings may be accessed via SEDAR at www.sedar.com and its United States public disclosure filings may be accessed via EDGAR at www.sec.gov and readers are urged to review these materials, including the technical reports filed with respect to the Company's mineral properties.

Cautionary Notes to US Investors

This website may also contain information with respect to adjacent or similar mineral properties in respect of which the Company has no interest or rights to explore or mine. The Company advises US investors that the US Securities and Exchange Commission's mining guidelines strictly prohibit information of this type in documents filed with the SEC. Readers are cautioned that the Company has no interest in or right to acquire any interest in any such properties, and that mineral deposits on adjacent or similar properties are not indicative of mineral deposits on the Company's properties.

This website and other information released by Trevali Mining Corporation may use the terms "resources", "reserves", "inferred resources", "measured resources" and "indicated resources". United States investors are advised that, while such terms are recognized and required by Canadian securities laws, the SEC does not recognize them. Under United States standards, mineralization may not be classified as a "reserve" unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made. Mineral resources that are not mineral reserves do not have demonstrated economic viability. United States investors are cautioned not to assume that all or any part of measured or indicated resources will ever be converted into reserves. Inferred resources have a great amount of uncertainty as to their existence and as to whether they can be mined legally or economically. It cannot be assumed that all or any part of the inferred resources will ever be upgraded to a higher category. Therefore, United States investors are also cautioned not to assume that all or any part of the inferred resources exist, or that they can be mined legally or economically.

National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101") is a rule developed by the Canadian Securities Administrators, which established standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. Unless otherwise indicated, all reserve and resource estimates disclosed in this web site or in other information released by Trevali Mining Corporation, have been or will be prepared in accordance with NI 43-101 and the Canadian Institute of Mining, Metallurgy and Petroleum (the "CIM") Standards on Mineral Resource and Mineral Reserves, adopted by the CIM Council on November 14, 2004 (the "CIM Standards") as they may be amended from time to time by the CIM. United States investors are cautioned that the requirements and terminology of NI 43-101 and the CIM Standards differ significantly from the requirements and terminology of the SEC set forth Industry Guide 7. Accordingly, the Company's disclosures regarding mineralization may not be comparable to similar information disclosed by companies subject to the SEC's Industry Guide 7.

Cautionary Note Regarding Third Party Links

The Company has provided links from this website to several other websites at arms length to the Company. The viewer should be aware that in linking to these outside websites, he or she is leaving the Trevali Mining Corporation website and that the Company is not responsible for any aspect of the content of the other site.

Trevali Mining Corporation Privacy Statement

Trevali Mining Corporation takes your privacy seriously, and is committed to the security, confidentiality and privacy of your personal information. The following discusses the Company's practices and policies for information collected from this website.

Maintaining the privacy and confidentiality of the Company's shareholder and interested parties' personal information is of utmost importance to us. The Company does not sell, rent, or loan any information regarding its shareholders or interested parties to anyone. Any information you give us is held with the utmost care and security, and will never be used in ways to which you have not consented.

Trevali Mining Corporation will not collect any personal information about individuals except when specifically and knowingly provided by such individuals. The Company will not share personal aggregate or summary information regarding its shareholders with partners or any other third parties, nor will it sell or share any personal information.

Use of Information Gathered

Trevali Mining Corporation collects certain personal information about you when you voluntarily provide it to request information from the Company or send the Company a message through its website. In order to process your request, the some or all of the following information must be provided (depending on the request): your name; your email address; your mailing address; your affiliation; your occupation; your telephone and/or fax number; your request; your rating of various aspects of the website; and how you heard about the Company. Some of this information is required and the remainder is voluntarily provided.

When you request information from Trevali Mining Corporation or register for our e-mail update list, we place you, dependant on the service you specify, on our list to receive news releases, updates, and bulletins about both the Company directly and/or related information that is pertinent to the Company's business model, by e-mail, mail, or fax. Additionally, if a phone number is provided we may call to ensure that such information is being received and understood in context, unless specified to the contrary.

The Company maintains, on the Company's computers, a back-up database of its shareholder requests for information via its website. This database is maintained internally as a record of requests for information and is for record-keeping purposes only. Trevali Mining Corporation takes reasonable precautions to protect your personal information against unauthorized access.

The Company collects certain non-identifiable information regarding the areas of the website you have visited, the websites from which you linked to the Company's website, the time and date of your visit, the time spent on the website, and other statistical information that helps us to better serve you. This information is summarized in a monthly statistical analysis and cannot be used to identify any particular individual.

Both personal and statistical information about our web visitors is collected and stored on our website provider's system and its confidentiality is maintained. It is not provided to any third party and is not used for any purposes except as described above.


The Company's databases (both its internal database and the website server database) of requests for information are retained indefinitely. If you wish to have your personal information removed from our databases or you no longer want us to send any further communications to you, please e-mail your request to unsubscribe@trevali.com with "remove" in the subject line and you will be completely and permanently removed from our database not later than thirty days after receipt of the request.

Cautionary Note with Respect to Third Party Links

This website may contain links to other sites. This privacy statement only applies to information collected on the Trevali Mining Corporation website. The Company disclaims any responsibility for the privacy practices of any third party websites.

National Instrument 43-101 Disclosure

National Instrument 43-101 - Standards of Disclosure for Mineral Projects is a rule developed by the Canadian Securities Administrators, and applicable throughout Canada, which establishes standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects materials to the issuer. Trevali Mining Corporation adheres to the NI 43-101 standards, and provides the following information related to its Peruvian projects.

The work programs at the Company's Peruvian properties have been designed and are run by EurGeol Dr. Mark D. Cruise, a qualified person as defined by National Instrument 43-101, who has supervised the preparation of the scientific and technical information that forms the basis for the disclosure with respect to the results of exploration on the Company's Peruvian projects as contained on this website. Dr. Cruise is the President and Chief Executive Officer of Trevali Mining Corporation, and is therefore not independent of the Company.

All geochemical samples are secured and shipped to ALS Chemex for assay. For properties where drilling is taking place, on-site personnel at the project photograph the core from each individual borehole prior to preparing the split core, which is then sealed and shipped to ALS Chemex for assay.

ALS Chemex's quality system complies with the requirements for the International Standards ISO 9001:2000 and ISO 17025: 1999. Analytical accuracy and precision are monitored by the analysis of reagent blanks, reference material and replicate samples. Quality control is further assured by the use of international and in-house standards. Finally, representative blind duplicate samples are forwarded to ALS Chemex and an ISO compliant third party laboratory for additional quality control.

© 2018 Trevali Mining Corporation
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