Exhibit 99.1

GOLDCORP INC.

ANNUAL INFORMATION FORM

FOR THE FINANCIAL YEAR ENDED DECEMBER 31, 2017

TABLE OF CONTENTS

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INTRODUCTORY NOTES

Cautionary Note Regarding Forward-Looking Statements

This annual information form contains “forward-looking statements” within the meaning of Section 27A of the United States Securities Act of 1933, as amended, Section 21E of the United States Exchange Act of 1934, as amended, the United States Private Securities Litigation Reform Act of 1995, or in releases made by the United States Securities and Exchange Commission (“ SEC ”), all as may be amended from time to time, and “forward-looking information” under the provisions of applicable Canadian securities legislation, concerning the business, operations and financial performance and condition of Goldcorp Inc. (“ we ”, “ us ”, “ our ” or “ Goldcorp ”). Forward-looking statements include, but are not limited to, statements with respect to the future price of gold, silver, zinc, copper and lead, the estimation of Mineral Reserves (as defined below) and Mineral Resources (as defined below), the realization of Mineral Reserve estimates, the timing and amount of estimated future production, costs of production, targeted cost reductions, capital expenditures, free cash flow, costs and timing of the development of new deposits, success of exploration activities, permitting and certification time lines, hedging practices, currency exchange rate fluctuations, requirements for additional capital, government regulation of mining operations, environmental risks, unanticipated reclamation expenses, health, safety and diversity initiatives, timing and possible outcome of pending litigation, title disputes or claims and limitations on insurance coverage. Generally, these forward-looking statements can be identified by the use of words such as “plans”, “expects”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates”, “believes”, or variations or comparable language of such words and phrases or statements that certain actions, events or results “may”, “could”, “would”, “should”, “might” or “will”, “occur” or “be achieved” or the negative connotation thereof.

Forward-looking statements are necessarily based upon a number of factors and assumptions that, if untrue, could cause our actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by such statements. Such statements and information are based on numerous assumptions regarding our present and future business strategies and the environment in which we will operate in the future, including the price of gold, anticipated costs and ability to achieve goals. Certain important factors that could cause actual results, performance or achievements to differ materially from those in the forward-looking statements include, among others, gold price volatility, discrepancies between actual and estimated production, Mineral Reserves and Mineral Resources and metallurgical recoveries, mining operational and development risks, litigation risks, regulatory restrictions (including environmental regulatory restrictions and liability), changes in national and local government legislation, taxation, controls or regulations and/or change in the administration of laws, policies and practices, expropriation or nationalization of property and political or economic developments in Canada, the United States, Mexico, Argentina, Chile, the Dominican Republic or other jurisdictions in which we carry on business, or may carry on business in the future, delays, suspensions or technical challenges associated with capital projects, higher prices for fuel, steel, power, labour and other consumables, currency fluctuations, the speculative nature of gold exploration, the global economic climate, dilution, share price volatility, competition, loss of key employees, additional funding requirements and defective title to mineral claims or property. Although we believe our expectations are based upon reasonable assumptions and have attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended.

Forward-looking statements are subject to known and unknown risks, uncertainties and other important factors that may cause our actual results, level of activity, performance or achievements to be materially different from those expressed or implied by such forward-looking statements, including but not limited to: future prices of gold, silver, zinc, copper and lead; mine development and operating risks; possible variations in ore reserves, grade or recovery rates; risks related to international operations, including economic and political instability in foreign jurisdictions in which we operate; risks related to current global financial conditions; risks related to joint venture operations; actual results of current exploration activities; actual results of current reclamation activities; environmental risks; conclusions of economic evaluations; changes in project parameters as plans continue to be refined; failure of plant, equipment or processes to

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operate as anticipated; accidents, labour disputes and other risks of the mining industry; risks associated with restructuring and cost-efficiency initiatives; delays in obtaining governmental approvals or financing or in the completion of development or construction activities; risks related to the integration of acquisitions; risks related to indebtedness and the service of such indebtedness, as well as those factors discussed in the section entitled “Risk Factors” in this annual information form. Although we have attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The forward-looking statements contained in this annual information form are made as of the date of this annual information form and, accordingly, are subject to change after such date. Except as otherwise indicated by us, these statements do not reflect the potential impact of any non-recurring or other special items or of any disposition, monetization, merger, acquisition, other business combination or other transaction that may be announced or that may occur after the date hereof. Forward-looking statements are provided for the purpose of providing information about management’s current expectations and plans and allowing investors and others to get a better understanding of our operating environment. We do not intend or undertake to publicly update any forward-looking statements that are included in this annual information form, whether as a result of new information, future events or otherwise, except in accordance with applicable securities laws.

Cautionary Note to United States Investors Concerning Estimates of Measured, Indicated and Inferred Resources

The Mineral Resource and Mineral Reserve estimates contained in this annual information form have been prepared in accordance with the requirements of Canadian securities laws, which differ from the requirements of United States securities laws and use terms that are not recognized by the SEC. Canadian reporting requirements for disclosure of mineral properties are governed by the Canadian Securities Administrators’ National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“ NI 43-101 ”). The definitions used in NI 43-101 are incorporated by reference from the Canadian Institute of Mining, Metallurgy and Petroleum (“ CIM ”) — Definition Standards adopted by CIM Council on May 10, 2014 (the “ CIM Definition Standards ”). U.S. reporting requirements are governed by the SEC Industry Guide 7 (“ Industry Guide 7 ”) under the United States Securities Act of 1933, as amended. These reporting standards have similar goals in terms of conveying an appropriate level of confidence in the disclosures being reported, but embody different approaches and definitions. For example, the terms “Mineral Reserve”, “Proven Mineral Reserve” and “Probable Mineral Reserve” are Canadian mining terms as defined in NI 43-101, and these definitions differ from the definitions in Industry Guide 7. Under Industry Guide 7 standards, a “final” or “bankable” feasibility study is required to report reserves and the primary environmental analysis or report must be filed with the appropriate governmental authority. Further, under Industry Guide 7, 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.

While the terms “Mineral Resource”, “Measured Mineral Resource”, “Indicated Mineral Resource” and “Inferred Mineral Resource” are defined in and required to be disclosed by NI 43-101, these terms are not defined terms under Industry Guide 7 and are normally not permitted to be used in reports and registration statements filed with the SEC. United States readers are cautioned not to assume that any part or all of mineral deposits in these categories will ever be converted into reserves. In addition, “Inferred Mineral Resources” have a great amount of uncertainty as to their existence and their economic and legal feasibility. A significant amount of exploration must be completed in order to determine whether an Inferred Mineral Resource may be upgraded to a higher category. Under Canadian regulations, estimates of Inferred Mineral Resources may not form the basis of feasibility or pre-feasibility studies, except in rare cases. United States readers are cautioned not to assume that all or any part of an Inferred Mineral Resource exists or is economically or legally mineable. Disclosure of “contained ounces” in a resource is permitted disclosure under Canadian regulations if such disclosure includes the grade or quality and the quantity for each category of Mineral Resource and Mineral Reserve; however, the SEC normally only permits issuers to report mineralization that does not constitute “reserves” by SEC standards as in place tonnage and grade without reference to unit measures.

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Accordingly, information contained in this annual information form containing descriptions of our mineral deposits may not be comparable to similar information made public by United States companies subject to the reporting and disclosure requirements under the United States federal securities laws and the rules and regulations thereunder.

Currency Presentation and Exchange Rate Information

This annual information form contains references to United States dollars (“ $ ” or “ US$ ”) and Canadian dollars (“ Canadian dollars ” or “ C$ ”). All dollar amounts referenced, unless otherwise indicated, are expressed in United States dollars.

The high, low, average and closing exchange rates for Canadian dollars in terms of the United States dollar, as quoted by the Bank of Canada, for each of the three years in the period ended December 31, 2017, were as follows:

(1) Calculated as an average of the daily noon rates for 2015 and 2016. For 2017, calculated as prior day daily average.

On March 22, 2018, the daily average rate for Canadian dollars in terms of the United States dollar, as quoted by the Bank of Canada, was US$1.00 = C$1.2908.

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The high, low, average and closing official cash settlement lead and zinc prices in United States dollars per pound, as quoted on the London Metal Exchange, for each of the three years in the period ended December 31, 2017, were as follows:

CORPORATE STRUCTURE

Goldcorp is a corporation governed by the Business Corporations Act (Ontario) following its amalgamation with Glamis Gold Ltd. on December 1, 2006. Our head office is located at Suite 3400, Park Place, 666 Burrard Street, Vancouver, British Columbia, V6C 2X8 and our registered office is located at Suite 2100, 40 King Street West, Toronto, Ontario, M5H 3C2.

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The following chart illustrates our principal subsidiaries (collectively, the “ Subsidiaries ”), together with the governing law of each Subsidiary and the percentage of voting securities we beneficially own, control or direct, as well as our material properties as at December 31, 2017. In this annual information form, except as otherwise required by the context, any reference to “we”, “us”, “our” or “Goldcorp” means, collectively, Goldcorp Inc. and the Subsidiaries.

(1)   Unless otherwise noted, each Subsidiary is wholly-owned, directly or indirectly, by Goldcorp.

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GENERAL DEVELOPMENT OF THE BUSINESS

Environmental Matters

Our properties are routinely inspected by staff representing the applicable regulatory authorities to ensure that such properties are in compliance with applicable environmental laws and regulations. Our properties are also periodically audited by our employees or external staff to ensure that they are in compliance with applicable environmental laws and regulations as well as the SEMS standards.

As part of our goal to minimize the impact from the environmental and social aspects of our projects and operations, we develop comprehensive closure and reclamation plans as part of our initial project planning and design. If we acquire a property that lacks a closure plan, we require the preparation of a closure plan. As part of our annual strategic business planning, we identify the significant environmental risks and review and update the total closure costs for each property to account for additional knowledge acquired with respect to a property or for changes in applicable laws or regulations. This process ensures that we properly budget for the costs associated with implementing appropriate sustainability management measures.

In addition to the initiatives described above under “Corporate Social Responsibility”, and consistent with the Sustainability Policy and the SEMS, an additional initiative of particular importance to us relating to the protection of the environment and sustainability is our participation in the International Cyanide Management Code (the “ Cyanide Code ”). The Cyanide Code is a voluntary industry program for companies involved in the production of gold by the cyanidation process and focuses on the management of cyanide and cyanide solutions. The Cyanide Code addresses the production of cyanide, its transport from the producer to the mine, its on-site storage and use, decommissioning and financial assurance, worker safety, emergency response, training, stakeholder involvement and implementation verification. We became a signatory to the Cyanide Code in July 2007, and currently all of our operating mines are certified compliant with the Cyanide Code, with the exception of one of our newest operations, the Éléonore Mine which received a successful third-party audit during the third quarter of 2017, and pending review by the International Cyanide Management Institute, certification is expected in 2018. In 2017, each of Red Lake Mines and Porcupine Mine was successfully recertified as required every three years.

Human Rights Policy

Our human rights policy (the “ Human Rights Policy ”) requires the integration of human rights best practices into all of our business and decision-making processes. The Human Rights Policy mandates that we operate in a way that respects the human rights of employees and of the members of the communities in which we operate. International humanitarian laws were consulted in developing the Human Rights Policy and it includes our pledge to seek to establish constructive dialogues and partnerships with a variety of stakeholders on human rights performance. Our Human Rights Policy recognizes that while governments have the primary responsibility to protect human rights, our activities have the potential to impact the human rights of individuals affected by our business operations. As such, the Human Rights Policy provides that we will seek constructive dialogues and partnerships with a variety of stakeholders on our human rights performance, especially those impacted directly by our operations. In 2017, as part of our commitment to increasing awareness of our human rights commitments, we extended our human rights training tools to key contractors and delivered internal human rights training targeted at department managers for key sites in Latin America.

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The Human Rights Policy reflects the changing social context in which we operate and defines our practices and commitments on human rights. Recent additions to this policy include clauses on community consultation; grievance mechanisms; commitment to the CFGS; commitment to respect the rights, interests, perspectives, and traditions of Indigenous Peoples; resettlement planning; and potential measures in the event of non-compliance.

The Voluntary Principles on Security and Human Rights (the “ Voluntary Principles ”) are a set of voluntary principles developed by the governments of the United States and the United Kingdom, companies in the extractive and energy sectors and non-governmental organizations to guide companies in maintaining the safety and security of their operations within an operating framework that ensures respect for human rights and fundamental freedoms. In 2016, we formally became a signatory of the Voluntary Principles. As a signatory, we are required to implement the principles across all of our operations and will improve our alignment of corporate policies and procedures with internationally recognized human rights principles in the provision of security for our operations.

In 2017, we performed assessments of the Voluntary Principles at several Latin American sites. In accordance with the Voluntary Principles, during 2017, all security staff received at least one pre-shift briefing per month on the use of force and additional training on respecting human rights. Our security supervisors provided ongoing training and refresher classes. Non-compliance with our human rights requirements is not tolerated.

The Sustainability Committee of the Board is responsible for overseeing the Human Rights Policy. The Human Rights Policy is available on our website at www.goldcorp.com .

Diversity and Inclusion Policy

Under our diversity and inclusion policy (the “ D&I Policy ”), we recognize the benefits arising from employee and Board diversity, including a broader pool of high quality employees, improving employee retention, accessing different perspectives and ideas and benefiting from all available talent. The D&I Policy promotes the benefits of, and need for, extending opportunities for career advancement to all of our workforce and outside candidates, without distinction as to gender, ethnicity, or any other basis. The D&I Policy is available on our website at www.goldcorp.com .

“ Diversity ” is any dimension that can be used to differentiate groups and people from one another, including but not limited to, sex, gender, age, ethnic origin, religion, education, sexual orientation, political belief, disability and family status. “Inclusion” refers to a culture of respect and appreciation of these differences.

We strive to foster an open and inclusive workplace environment and strongly support the principle that all individuals should have an equal opportunity to participate in our company and achieve their full potential. In compliance with our Code of Conduct and the D&I Policy, directors, officers, employees and contractors will:

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Notable achievements in 2017 included:

Diversity and Inclusion Strategy : In 2017, our Diversity Committee (now Diversity and Inclusion Committee) continued to promote diversity and inclusion across Goldcorp and focus efforts to enhance our inclusive workplace. A key initiative of the Committee in 2017 was the development of a multi-year, overarching Diversity and Inclusion Strategy for Goldcorp. We worked with subject matter experts and third-party suppliers and developed a strategy informed by the Global Diversity and Inclusion Benchmarks and the results of our 2016 Diversity Survey. We will use the Global Diversity and Inclusion Benchmarks as well as other performance indicators to measure our progress in this space.

Unconscious Bias Awareness Training: In 2017, we cascaded the Unconscious Bias awareness training to mid-management at our head office in Vancouver and multiple mine and project site locations across Canada. This training (also completed by all senior management in 2016) raises awareness and deepens understanding of unconscious bias in the workplace, and provides strategies for disrupting and overcoming bias. In 2018, we will be completing this training across mine sites in Canada, Argentina and Mexico.

Journey to Success Conference: In 2017, we held our second Goldcorp women’s conference in Mexico City, titled “Our Journey to Success”, which built on the theme of the first Goldcorp women’s conference held in 2013, entitled “Believe to Achieve”. The conference was an opportunity to learn, connect and celebrate, and brought together employees from across our mines, projects and office sites, from Argentina to Canada. Guest speakers shared insights on work-life balance; lessons learned from career accomplishments; and how to adapt to change and rise to challenges .

Future Choices Program: To ensure gender diversity throughout our organization, we promote our acclaimed, enterprise-wide training, development and mentorship initiative for women at Goldcorp, entitled “Creating Choices”, which strengthens the ability of our female employees to: understand opportunities for personal and professional growth; develop their self-confidence and courage; build strong partnerships with fellow employees and communities where we operate; gain access to mentoring; and receive recognition for their contributions to Goldcorp. In 2017, we launched the third installment of the Creating Choices program. Named “Future Choices”, the program equips and empowers women for sustainable success, long after mine closure. The four modules of the program provide women with insights on entrepreneurship, basic financial concepts, self-confidence and change management skills to ensure they continue to lead and succeed in their communities, long after mining operations have ceased. We trained 37 inspiring facilitators from across our operations to deliver this program to their sites. To date, over 1,800 women have graduated from the Creating Choices suite of programs.

Gender Diversity Initiatives: In 2017, as we achieved our commitment under the Catalyst Accord ¹ to increase the overall percentage of women on the Board to 25%, we were proud to sign a further pledge to accelerate the advancement of women. This new Catalyst ² pledge aims to increase the average percentage of women on boards and women in executive positions in corporate Canada to 30% or greater by 2022, and share key metrics with Catalyst to benchmark collective progress towards these goals. By pledging to accelerate or maintain (where already strong) the representation of women on our Board and in executive positions by 2022, we are making our commitment to diversity and inclusion visible to our employees and shareholders. In 2018, we will remain actively committed to pursuing and developing ongoing diversity initiatives at Goldcorp.

¹ The Catalyst Accord is a call to action for Canadian corporations to increase the overall proportion of FP500 board seats held by women to 25 percent by 2017.

² Founded in 1962, Catalyst is a leading non-profit organization dedicated to expanding opportunities for women in business.

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In addition, the following policies also promote and support diversity and inclusion: Code of Conduct; Sustainability Policy; Employee Assistance Program; Harassment Policy (British Columbia and Ontario); and Human Rights Policy.

Anti-Bribery and Anti-Corruption Policy

Our anti-bribery and anti-corruption policy (the “ Anti-Bribery and Anti-Corruption Policy ”) outlines the requirements that must be fulfilled by all our employees, officers and directors, as well as by any third party working for or acting on our behalf. These requirements include prohibitions against bribing government officials, making facilitation payments and commercial bribery.

The Anti-Bribery and Anti-Corruption Policy also provides employees with clarity regarding: books and records transparency; giving gifts to government officials; making political or charitable contributions; third party oversight and due diligence; internal controls; and management’s responsibility to promote an ethical tone from the top and create awareness of the policy.

Technical Information

CIM Definition Standards

The Mineral Reserves and Mineral Resources estimations for the Red Lake Mines, Porcupine Mine, Musselwhite Mine, Éléonore Mine, Peñasquito Mine, Cerro Negro Mine, Pueblo Viejo Mine, Coffee Project, NuevaUnión Project, Norte Abierto Project, and Noche Buena Project have been prepared in accordance with the CIM Definition Standards that are incorporated by reference in NI 43-101. The following definitions are reproduced from the CIM Definition Standards:

A “ Mineral Resource ” is a concentration or occurrence of solid material of economic interest in or on the Earth’s crust in such form, grade or quality and quantity that there are reasonable prospects for eventual economic extraction. The location, quantity, grade or quality, continuity and other geological characteristics of a Mineral Resource are known, estimated or interpreted from specific geological evidence and knowledge, including sampling. Mineral Resources are sub-divided, in order of increasing geological confidence, into Inferred, Indicated and Measured categories.

An “ Inferred Mineral Resource ” is that part of a Mineral Resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. Geological evidence is sufficient to imply but not verify geological and grade or quality continuity. An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that the majority of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration.

An “ Indicated Mineral Resource ” is that part of a Mineral Resource for which quantity, grade or quality, densities, shape and physical characteristics are estimated with sufficient confidence to allow the application of Modifying Factors (as defined below) in sufficient detail to support mine planning and evaluation of the economic viability of the deposit. Geological evidence is derived from adequately detailed and reliable exploration, sampling and testing and is sufficient to assume geological and grade or quality continuity between points of observation. An Indicated Mineral Resource has a lower level of confidence than that applying to a Measured Mineral Resource and may only be converted to a Probable Mineral Reserve.

A “ Measured Mineral Resource ” is that part of a Mineral Resource for which quantity, grade or quality, densities, shape, and physical characteristics are estimated with confidence sufficient to allow the application of Modifying Factors to support detailed mine planning and final evaluation of the economic viability of the deposit. Geological evidence is derived from detailed and reliable exploration, sampling and testing and is sufficient to confirm geological and grade or quality continuity between points of observation. A Measured Mineral Resource has a higher level of confidence than that applying to either an Indicated Mineral Resource or an Inferred Mineral Resource. It may be converted to a Proven Mineral Reserve or to a Probable Mineral Reserve.

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A “ Mineral Reserve ” is the economically mineable part of a Measured and/or Indicated Mineral Resource. It includes diluting materials and allowances for losses, which may occur when the material is mined or extracted and is defined by studies at pre-feasibility or feasibility level as appropriate that include application of Modifying Factors. Such studies demonstrate that, at the time of reporting, extraction could reasonably be justified. The reference point at which Mineral Reserves are defined, usually the point where the ore is delivered to the processing plant, must be stated. It is important that, in all situations where the reference point is different, such as for a saleable product, a clarifying statement is included to ensure that the reader is fully informed as to what is being reported. The public disclosure of a Mineral Reserve must be demonstrated by a pre-feasibility study or feasibility study.

A “ Probable Mineral Reserve ” is the economically mineable part of an Indicated, and in some circumstances, a Measured Mineral Resource. The confidence in the Modifying Factors applying to a Probable Mineral Reserve is lower than that applying to a Proven Mineral Reserve.

A “ Proven Mineral Reserve ” is the economically mineable part of a Measured Mineral Resource. A Proven Mineral Reserve implies a high degree of confidence in the Modifying Factors.

For the purposes of the CIM Definition Standards, “ Modifying Factors ” are considerations used to convert Mineral Resources to Mineral Reserves. These include, but are not restricted to, mining, processing, metallurgical, infrastructure, economic, marketing, legal, environmental, social and governmental factors

JORC Code Definitions

The Ore Reserves and Mineral Resources estimations for the Alumbrera Mine have been prepared in accordance with the current version of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the “ JORC Code ”), the Australian worldwide standards. The JORC Code has been accepted for current disclosure rules in Canada under NI 43-101. The following definitions are reproduced from the JORC Code:

A “ Mineral Resource ” is a concentration or occurrence of solid material of economic interest in or on the Earth’s crust in such form, grade (or quality), and quantity that there are reasonable prospects for eventual economic extraction. The location, quantity, grade (or quality), continuity and other geological characteristics of a Mineral Resource are known, estimated or interpreted from specific geological evidence and knowledge, including sampling. Mineral Resources are sub-divided, in order of increasing geological confidence, into Inferred, Indicated and Measured categories.

An “ Inferred Mineral Resource ” is that part of a Mineral Resource for which quantity and grade (or quality) are estimated on the basis of limited geological evidence and sampling. Geological evidence is sufficient to imply but not verify geological and grade (or quality) continuity. It is based on exploration, sampling and testing information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes. An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated Mineral Resource and must not be converted to an Ore Reserve. It is reasonably expected that the majority of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration.

An “ Indicated Mineral Resource ” is that part of a Mineral Resource for which quantity, grade (or quality), densities, shape and physical characteristics are estimated with sufficient confidence to allow the application of Modifying Factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit. Geological evidence is derived from adequately detailed and reliable exploration, sampling and testing gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes, and is sufficient to assume geological and grade (or quality) continuity between points of observation where data and samples are gathered. An Indicated Mineral Resource has a lower level of confidence than that applying to a Measured Mineral Resource and may only be converted to a Probable Ore Reserve.

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A “ Measured Mineral Resource ” is that part of a Mineral Resource for which quantity, grade (or quality), densities, shape, and physical characteristics are estimated with confidence sufficient to allow the application of Modifying Factors to support detailed mine planning and final evaluation of the economic viability of the deposit. Geological evidence is derived from detailed and reliable exploration, sampling and testing gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes, and is sufficient to confirm geological and grade (or quality) continuity between points of observation where data and samples are gathered. A Measured Mineral Resource has a higher level of confidence than that applying to either an Indicated Mineral Resource or an Inferred Mineral Resource. It may be converted to a Proved Ore Reserve or under certain circumstances to a Probable Ore Reserve.

An “ Ore Reserve ” is the economically mineable part of a Measured and/or Indicated Mineral Resource. It includes diluting materials and allowances for losses, which may occur when the material is mined or extracted and is defined by studies at pre-feasibility or feasibility level as appropriate that include application of Modifying Factors. Such studies demonstrate that, at the time of reporting, extraction could reasonably be justified. The reference point at which Reserves are defined, usually the point where the ore is delivered to the processing plant, must be stated. It is important that, in all situations where the reference point is different, such as for a saleable product, a clarifying statement is included to ensure that the reader is fully informed as to what is being reported.

A “ Probable Ore Reserve ” is the economically mineable part of an Indicated, and in some circumstances, a Measured Mineral Resource. The confidence in the Modifying Factors applying to a Probable Ore Reserve is lower than that applying to a Proved Ore Reserve.

A “ Proved Ore Reserve ” is the economically mineable part of a Measured Mineral Resource. A Proved Ore Reserve implies a high degree of confidence in the Modifying Factors

For the purposes of the JORC Code, “ Modifying Factors ” are considerations used to convert Mineral Resources to Ore Reserves. These include, but are not restricted to, mining, processing, metallurgical, infrastructure, economic, marketing, legal, environmental, social and governmental factors.

The foregoing definitions of Ore Reserves and Mineral Resources as set forth in the JORC Code have been reconciled to the definitions set forth in the CIM Definition Standards. If the Ore Reserves and Mineral Resources for the Alumbrera Mine were estimated in accordance with the definitions in the CIM Definition Standards, there would be no substantive difference in such Ore Reserves and Mineral Resources

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Summary of Ore Reserve/Mineral Reserve and Mineral Resource Estimates

The following table sets forth the gold, silver, copper, lead, zinc and molybdenum Ore Reserve/Mineral Reserve estimates for each of the Red Lake Mines, Porcupine Mine, Musselwhite Mine, Éléonore Mine, Peñasquito Mine, Cerro Negro Mine, Alumbrera Mine, Pueblo Viejo Mine, NuevaUnión Project (El Morro and Relincho deposits), Norte Abierto Project (Casale deposit) and Coffee Project, effective June 30, 2017 unless otherwise indicated:

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The following table sets forth the gold, silver, copper, lead, zinc and molybdenum Mineral Resource estimates for each of the Red Lake Mines, Porcupine Mine, Musselwhite Mine, Éléonore Mine, Peñasquito Mine, Cerro Negro Mine, Alumbrera Mine, Pueblo Viejo Mine, NuevaUnión Project (El Morro and Relincho deposits), Norte Abierto Project (Casale and Caspiche deposits), Noche Buena Project and Coffee Project, effective June 30, 2017 unless otherwise indicated:

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Notes:

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MINERAL PROPERTIES

Our material mineral properties are the Red Lake Mines and Éléonore Mine in Canada, the Peñasquito Mine in Mexico, the Pueblo Viejo Mine (40% interest) in the Dominican Republic, and the Cerro Negro Mine in Argentina.

Red Lake Mines, Canada

The Red Lake Mines, wholly-owned by Goldcorp, are located in the Red Lake district, Ontario. The scientific and technical information included in the following section has been derived, in part, from the technical report entitled Red Lake Operations, Ontario Canada, NI 43-101 Technical Report (the “ Red Lake Report ”) dated effective December 31, 2015 prepared by Stephane Blais, P.Eng., Chris Osiowy, P.Geo., and Nuri Hmidi, P.Eng., each of whom is a qualified person under NI 43-101.

Project Description, Location and Access

The Red Lake Mines are owned by Goldcorp (87.45%) and Goldcorp Canada Ltd. (“ Goldcorp Canada ”) (12.55%) through a partnership. The operations comprise the former Campbell and Red Lake underground mines, which are now integrated and operate as a single entity by Red Lake Gold Mines. In this annual information form, the shafts and mill at Red Lake are collectively termed the Red Lake Complex; those at Campbell are termed the Campbell Complex. The combined mine area is also referred to as the greater Red Lake–Campbell Complex. The Cochenour Complex covers mineralization discovered at the Western Discovery Zone deposit and the former Cochenour–Willans mine and also includes the former Gold Eagle Mines joint venture property (see – “History” below).

The Red Lake mining operation is located 180 kilometres north of the town of Dryden, District of Kenora, northwestern Ontario. The Red Lake area is accessible by Highway 105, which joins the Trans-Canada Highway at Vermilion Bay, 175 kilometres south and 100 kilometres east of Kenora, Ontario. Commercial air services operate to Red Lake from Thunder Bay and Winnipeg.

The Red Lake Complex consists of 70 patented mining and surface rights claims, three patented mining rights only claims, 27 patented surface rights only claims, and six Licences of Occupation over water for a total of 106 claims covering 1,693 hectares. The Campbell Complex consists of 41 patented mining and surface rights claims and 15 Licences of Occupation for a total of 56 claims covering 786 hectares. Claims are held in the name of either Goldcorp, or Goldcorp Canada, or are jointly held by the two companies. The Cochenour Complex comprises a total of 111 claims over 1,382 hectares. This consists of 73 Patents with mining and surface rights, seven Patents with mining rights only, three Leases with mining rights only, 27 Licences of Occupation over water and one unpatented claim which is currently in the lease application process. Tenure is jointly held in the names of Goldcorp (72%) and Goldcorp Canada (28%) with the exception of the Gold Eagle Property claims (28 patented mining and surface rights claims and 16 Licences of Occupation) which are owned wholly by Goldcorp (100%). As required under Ontario law, patented mining lands have been surveyed. Required fees and duties have been paid to the appropriate regulatory authorities, and the claims are in good standing. Leases have associated work commitments and fees. A 21-year lease may be renewed provided that the lessee can prove that the mining lease is being used for mining purposes and meets certain criteria, and application for renewal is made prior to the expiry date of the lease.

Red Lake Gold Mines has collaboration agreements with two First Nations that are signatory to Treaty No. 3 and have treaty rights which they assert within the operations area of the Red Lake Mines region: Obishikokaang Collaboration Agreement executed August 16, 2013 with Lac Seul First Nation (“ LSFN ”) and Goldcorp Canada; and a second Collaboration Agreement which became effective on January 29, 2015 with Wabauskang First Nation (“ WFN ”) and Goldcorp Canada. LSFN is located to the southeast of Red Lake with a band membership of 3,200 and WFN is located to the south of Red Lake with a band membership of 315. These agreements provide a framework for strengthened collaboration in the development and operations of Red Lake Mines and outline tangible benefits for the individual First Nations, including skills training and employment, opportunities for business development and contracting, and a framework for issues resolution, regulatory permitting and our future financial contributions.

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We hold sufficient surface rights to support the Red Lake–Campbell mining operations and associated infrastructure, and sufficient surface rights in the Cochenour Complex to support any proposed re-development. Environmental permits are required by various federal, provincial, and municipal agencies and are in place for all current operations. No new permits are currently required for current exploration activity and mining operations, but existing permit amendments are required from time to time. The Cochenour Complex closure plan was filed in April 2014, and the closure plan for the Red Lake-Campbell Complex was filed in May 2015. The Red Lake Mines and Cochenour Complex closure plans satisfy all regulatory requirements. We are satisfied that all material environmental liabilities are identified in the existing closure plans for the operations, which are limited to those that would reasonably be expected to be associated with gold mines that have been operating for more than 60 years, and where production is from underground sources, including roads, site infrastructure, and waste and tailings disposal facilities.

History

Red Lake Complex

The first recorded prospecting in the Red Lake district was carried out by the northwestern Ontario Exploration Company in 1887. Red Lake was first staked during the Red Lake Gold Rush in 1926. In 1944, the property was re-staked and Dickenson Red Lake Mines Limited was incorporated. Production mining began in 1948 at a rate of 113 tonnes per day and increased to 454 tonnes per day in the 1970s. In the early 1980s, the mill capacity was increased to 907 tonnes per day and long-hole stoping was introduced. The change in mining method resulted in a severe drop in production grade. Cut-and-fill mining was subsequently reintroduced, and production reached approximately 907 tonnes per day by 1993 to 1994. An exploration core drilling program initiated in 1995 within the lower levels of the mine resulted in the discovery of a cluster of high grade gold veins. The #3 shaft was developed from January 2004 to January 2007 to a depth of 1,925 metres.

Campbell Complex

The Campbell claims were staked in 1926. Subsequently, there was a period of claim cancellations and re-staking of the area. In the 1940s, George and Colin Campbell re-staked the area, Campbell Red Lake Mines was incorporated and Dome Mines Limited (“ Dome Mines ”) purchased an option that eventually resulted in Dome Mines acquiring a 57% ownership interest in the Campbell Red Lake Mines company. In 1946, after additional exploration had been carried out, a four-compartment shaft with four levels was sunk to a depth of 182 metres. Mill construction began in 1948 and the mill went into operation the following year reaching a capacity of 272 tonnes per day. The shaft was deepened to 655 metres in the 1950s to exploit a high-grade zone discovered on the 14 ^th level of the mine. Following the merger of Campbell Red Lake Mines, Dome Mines and Placer Development Limited, in 1987, an autoclave was installed at the Campbell Complex, replacing the existing roaster, the mill flotation circuit was upgraded, a paste-fill plant constructed, an underground decline developed, and the Reid Shaft was commissioned.

Cochenour Complex

The original claims on the Cochenour-Willans property were staked in 1926 to 1927 by W.M Cochenour, D. Willans and H.G. Young, and in 1928 the Cochenour–Willans syndicate was formed. Cochenour–Willans Gold Mines Ltd. was incorporated in 1936 and production began in 1939 at a rate of 136 to 181 tonnes per day. Operations ran for 32 years, from 1939 to 1971, during which about 2.1 million tonnes grading 18.44 grams per tonne (“ g/t ”) of gold was processed with approximately 1.24 million ounces of gold recovered. Underground mine workings extended down to the 670 metre level.

In 1997, we purchased a 100% interest in the Cochenour–Willans mine area. We completed trenching, grab sampling and compilation work between 1998 and 2002. The mine was allowed to flood in 2003. Surface drilling was undertaken from 2002 to 2009, consisting of 94 surface drill holes, totalling 66,968 metres. Following dewatering, in 2010, renewed access to the underground Cochenour-Willans workings allowed completion of 49 underground drill holes (20,558 metres), together with 17 surface drill holes (including wedges) totalling 13,881 metres.

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The Cochenour No. 1 shaft was slashed and deepened to below the 34 level in 2010 to 2014 to support exploration and development of the recently acquired Gold Eagle property located to the south. Both decline and incline ramp developments are currently active from the 34 level station.

Geological Setting, Mineralization and Deposit Types

The mineralization within the Red Lake Mines operations is typical of Archean greenstone belt-hosted gold deposits. The Red Lake greenstone belt is located in the western portion of the Uchi Subprovince of the Canadian Shield. The project area is underlain mainly by tholeiitic basalt and locally by komatiitic basalt of the Balmer Assemblage. The mine sequence also includes felsic, peridotitic and other mafic to lamprophyric intrusive rocks of various younger ages. The steeply-dipping, south–southwest-folded package is unconformably overlain by felsic volcaniclastic rocks, and clastic and chemical sedimentary rocks of the Bruce Channel assemblage.

The local package of rocks has been significantly flattened and folded. Fold limbs of the relatively plastic ultramafic units are so thinned and attenuated that major shear zones formed along them. These shear zones acted as primary hydrothermal fluid transportation corridors and host a significant portion of the gold mineralization in the area. Other significant mineralized structures occur within lower-strain areas of the stratigraphy, usually associated with brittle conjugate fracture systems in close proximity to lithological boundaries possessing high competency contrasts.

Gold deposits in the district have been classified into three main categories: mafic volcanic-hosted, felsic intrusive-hosted and stratabound. The majority of the productive zones in the Red Lake camp are of the mafic volcanic-hosted type and occur as vein systems and accompanying sulphide replacement within sheared mafic to komatiitic basalts of the Balmer Assemblage.

There are generally three styles of mineralization in the Red Lake–Campbell Complex: vein replacement mineralization, replacement mineralization, and sulphide mineralization. Vein replacement ore involves intense silica replacement of precursor ankerite veins often accompanied by abundant visible gold and minor sulphides. This is the dominant mineralization type found in zones such as the Red Lake High Grade Zone (“ HGZ ”) and the Campbell G and L zones. Replacement mineralization involved the intense silica replacement of sheared mafic rocks accompanied by abundant arsenopyrite and pyrrhotite ± biotite. This style of mineralization commonly envelops vein replacement mineralization, but can occur elsewhere. Sulphide mineralization is typically found within broad zones of strongly sheared mafic rocks and consists of fine disseminated pyrrhotite (as much as 30%) accompanied by biotite alteration.

Two styles of mineralization occur within the Cochenour–Willans mine footprint: mineralization associated with discrete shear structures immediately in the footwall of the Cochenour Thrust structure, and mineralization that occurs well into the footwall north of the Cochenour Thrust associated with intersections between “north–south” carbonated shear zones with iron formation. The Bruce Channel deposit mineralization is hosted in highly sheared and sulphidized mafic rocks or in “grey sulphide” replacement breccia zones. The Western Discovery Zone mineralization consists of a series of sub-parallel, quartz-rich veinlets and tension veins developed in intrusive rocks of the McKenzie granodiorite stock.

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Gold appears as free milling gold as well as refractory, arsenopyrite-associated gold for all deposits.

The knowledge of the Red Lake deposit, including the Cochenour Deposit, setting and lithologies, and of the mineralization style and its structural and alteration controls, is sufficient to support Mineral Resource and Mineral Reserve estimation.

Exploration

The Red Lake operations have a long exploration and mining history. Gold mineralization was first identified in 1922. The original Red Lake mine commenced production in 1948, and the Campbell mine in 1949.

Exploration activities at Red Lake have included regional and detailed geological and structural mapping, rock, silt and soil sampling, trenching, reverse circulation and diamond drilling, airborne geophysical surveys, ground induced polarization geophysical surveys, mineralization characterization and petrographic studies, metallurgical testing of samples, Mineral Resource and Mineral Reserve estimates, baseline environmental, geotechnical and hydrological studies, and technical studies.

In 2017, exploration drilling programs totalling 115,454 metres with 690 core holes were carried out at the Red Lake and Campbell Complexes; and an additional 20,717 metres with 132 core holes at the Cochenour deposit.

The exploration programs completed to date are appropriate to the known mineralization styles. There is considerable remaining exploration potential in the vicinity of the current mining operations and the Red Lake region.

Drilling

A significant amount of surface and underground core drill data has been collected over the 60+ year history of Red Lake. Drilling from 1947 to 2017 at the Red Lake and Campbell Complexes totals 65,894 drill holes (approximately 6,157,454 metres). Drilling at the Cochenour Complex from 1939 to 2017 comprises about 17,871 drill holes (approximately 2,103,957 metres).

Currently, exploration drill data spacing for the Red Lake Complex range from 14 metres to 30 metres. In development and stope areas, underground drilling infills this spacing to approximately 7.5 to 15 metres by 7.5 to 15 metres. Intercept spacing is variable due to the irregular location of drill sites and the complex distribution of the mineralized zones. Drilling at the Cochenour Complex is infilling from the previous 30 metre by 30 metre spacing.

Standardized logging forms and geological legends are currently used. Logs record assays, lithologies, veining and replacement zones, vein styles and percentage amounts over sampled interval lengths and intensity, sulphide mineralization type and intensity, alteration type and intensity, faults and fracture frequency and orientation, rock quality designation, and structure type, frequency and intensity. Select drill holes are photographed.

Core quality is very high, with core recovery on average >95% on all core sizes. There are no areas where poor recovery is consistently encountered.

The collars of all drill holes are surveyed by transit for location, bearing and dip and tied into the mine grid. The same grid is used for all of the mine complexes.

Downhole surveys since 1995 at Red Lake were conducted in a systematic manner with a gyroscopic (gyro) survey instrument (unaffected by magnetics) used for drill holes steeper than 70°, and a Reflex Maxibor survey instrument used for drill holes with flatter dips. Site specifications require downhole surveys at 30 metre intervals or less. In the earlier stages of the mining operation, Sperry Sun multi-shot, Icefield multi-shot, Light-Log and Tropari instruments were used, but the gyro and Maxibor units have replaced this instrumentation.

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Downhole surveys at the Campbell Complex utilized Reflex and Ranger electronic compass single-shot surveys tests. Most of the drill holes greater than 120 metres are surveyed using the Maxibor method. Prior to that, Pajari test instruments were used, which provided azimuth and dip orientations. Sperry Sun multi-shot instruments were used on deep (> 300 metre holes) for a period from the early 1980s to the late 1990s. Pre-1980 and into the 1990s, drill hole inclination was derived using “acid tests”. This type of testing has been replaced by Reflex electronic compass single-shot surveys.

Downhole surveying on both complexes (since 2006) utilizes a combination of testing equipment that can include Reflex, Maxibor and north-seeking gyro, depending on the depth of the drill holes.

Drill data are typically verified prior to Mineral Resource and Mineral Reserve estimation by running a software program check.

Core sampling practices have varied between predecessor companies and over time. Typically, historic core sampling has targeted mineralized zones with additional bracket samples taken in waste rock. Current practice has changed, with some exceptions, to sampling the entire drill hole. Presently a high percentage of core sent out for assaying is whole core. A certain amount of core is cut and retained. This core in recent years has been from select deep high-grade zone drilling and surface drilling.

At Red Lake Complex, sampling honored lithological and mineralized zone boundaries. Typical sample lengths were 90 centimetres for un-mineralized intervals, 60 centimetres or less for mineralized intervals, and 30 centimetres intervals for visible gold, though samples were taken on shorter intervals that directly corresponded to very narrow, high-grade mineralized structures.

Until 1999 at the Campbell Complex, sample lengths were typically in the 0.6 to 1.0 metres range, and usually shorter in the higher-grade sections. Low-grade rock and waste were typically sampled over 0.6 to 1.5 metres lengths, averaging 0.67 metres. High-grade sections were sampled over 15 centimetres to 60 centimetres intervals for BQ and NQ core, and 0.90 metres for smaller AQ/AQTK core, except where significant geological differences were present, these normally being narrow, high-grade occurrences.

For production purposes, chip sampling is performed on a blast-by-blast basis by the production geology team, while muck sampling is done by the miner during the mucking process. Muck samples are used to provide a general guide and back-up information for day to day operation, while test holes are required to ascertain that no mineralization is missed in the walls of the stope.

Historically a specific gravity of 2.91 (11.0 cubic feet per short ton) has been used at the Red Lake Complex. A specific gravity of 2.98, developed from composite averages, is used for the HGZ. During completion of the resource estimation on the Cochenour Complex, a specific gravity of 2.91 was used for all zones except the Western Discovery Zone.

The quantity and quality of the lithological, geotechnical, collar, and down-hole survey data collected during the exploration and infill drill programs are sufficient to support Mineral Resource and Mineral Reserve estimation.

Sampling, Analysis and Data Verification

Given the long production history, a number of laboratories have been used in support of operations.

Core drill and underground samples were analysed by a combination of independent laboratories and the Red Lake and Campbell Complex run-of-mine laboratories, using industry-standard methods for gold analysis. In general, exploration and infill core programs were analysed by independent laboratories using industry-standard methods for gold analysis from 2001. Current run-of-mine sampling is performed by the mine laboratory, which is operated independently of Goldcorp. Historically, the Campbell and Red Lake run-of-mine laboratories primarily performed day to day assays for mining operational purposes; however, exploration core has also been processed through the laboratories. Neither laboratory has held International Organization for Standardization (“ ISO ”) accreditation. All remaining laboratories used for analytical data have held ISO certifications since 2001; it is not known what certification was held prior to that date.

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Sample preparation for exploration and run-of-mine samples consists of drying as required, crushing, and selection of a sub-split that is then pulverized to produce a pulp sample sufficient for analytical purposes. Production samples and drill core are kept separate in the mine site laboratories to reduce the risk of contamination. The sample preparation procedure is in line with industry-standard methods for gold deposits that have coarse visible gold and a high nugget effect.

Samples are typically analyzed using fire assay with a gravimetric or atomic absorption finish, depending on the anticipated grade of the sample. In 2010, selected exploration drill core samples were submitted for inductively-coupled plasma analysis as well as the regular fire assay/atomic absorption/gravimetric analysis. A certain percentage of the samples were also selected for pulp metallic analysis.

The collected sample data adequately reflect deposit dimensions, true widths of mineralization, and the style of the deposits.

There is limited information available on the quality assurance and quality control (“ QA/QC ”) employed for the earlier drill programs; however, sufficient programs of reanalysis have been performed that the data can be accepted for use in estimation. Our drill programs since 2006 on the Red Lake and Campbell Complexes have included insertion of blank and certified standard reference material (SRM) samples. Submission of QA/QC samples was initiated for the Cochenour Complex in 2010, and comprises submission of SRM and blank materials. In 2017, QA/QC standard and blank insertion rates were increased, and field duplicates were also introduced.

Data that were collected were subject to validation, using in-built program triggers that automatically checked data on upload to the database. Data are also verified against the original hard copy monthly reports, as well as in other software packages. Verification is performed on all digitally-collected data on upload to the main database, and includes checks on surveys, collar co-ordinates, lithology data, and assay data. The checks are appropriate, and consistent with industry standards.

Drill core sample security is maintained at the Red Lake–Campbell Complex and the Cochenour Complex through supervision of transport of the core from the underground/surface drill or sample site, through to the logging facility and to the in-house or external assay laboratories. Chain-of-custody procedures consisted of filling out sample submittal forms that were sent to the laboratory with sample shipments to make certain that all samples were received by the laboratory. Current sample storage procedures and storage areas are consistent with industry standards.

The quality of the gold analytical data is sufficiently reliable to support Mineral Resource and Mineral Reserve estimation and that sample preparation, analysis, and security are generally performed in accordance with exploration best practices and industry standards.

Several data verification programs and audits have been performed at Red Lake Mines over recent history by independent consultants in support of technical reports and by our personnel in support of mining studies. We have also performed our own internal validations. Data verification checks were performed as follows:

• Micon International Limited (2004, 2006): Micon staff reviewed available data in support of technical reports prepared in 2004 and 2006 for Exall/Southern Ventures; no material biases or errors noted;

• Watts, Griffis, and McOuat (2005, 2007): reviewed the QA/QC program and the logging and sampling/assaying procedures; concluded at the time of each audit that the database was in good order and that the procedures were to industry standards; and

• Goldcorp (2006 to date): database validation checks, laboratory inspections; no material biases or errors noted.

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A reasonable level of verification has been completed, and no material issues have been left unidentified from the programs undertaken. Data verification programs completed on the data collected adequately support the geological interpretations, and the quality of the analyses and the analytical database, and therefore support the use of the data in Mineral Resource and Mineral Reserve estimation.

Mineral Processing and Metallurgical Testing

Over the project history, a significant number of metallurgical studies and accompanying laboratory-scale and/or pilot plant test work have been completed. Studies included mineralogical studies, grindability and comminution test work, bench and pilot plant flotation tests, thickener tests and reagent test work.

Programs were sufficient to establish the optimal processing routes for the Red Lake–Campbell ores, were performed on mineralization that was typical of the deposits, and supported estimation of recovery factors for the various ore types.

Test work to date on the Cochenour Complex mineralization indicates that mineralization types at Cochenour can be treated in the current Campbell process plant. The Bond work index determinations showed that the Bruce Channel mineralization hardness can be described as moderate to moderately soft. Therefore, the mineralized material should be readily processed in the existing grinding circuit at the Campbell Complex. Relatively poor leach-only recoveries indicated that a refractory ore treatment process (autoclave) is required to achieve reasonable overall gold recovery.

Mineral Reserve and Mineral Resource Estimates

The following table sets forth the gold Mineral Reserve estimations for Red Lake Mines effective June 30, 2017:

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The following table sets forth the gold Mineral Resource estimation for Red Lake Mines effective June 30, 2017:

Environmental, permitting, legal, title, taxation, socio-economic, marketing and political factors and constraints have been taken into account. The Mineral Reserves are acceptable to support mine planning. Areas of uncertainty that may materially impact the Mineral Resource and Mineral Reserve estimates include: commodity price and exchange rate assumptions used; rock mechanics (geotechnical) constraints; geological complexity; and maintaining constant underground access to all working areas.

Mining Operations

Red Lake Mines consists of a single underground operating mine (Red Lake and Campbell Complexes) and an advanced underground exploration program (Cochenour). Mining consists of: longhole, mechanized underhand or overhand cut and fill techniques and development mining methods. Mined areas are routinely paste filled to maintain overall stability. Production forecasts are expected to be achievable with the current equipment and plant, and replacements have been acceptably scheduled.

There is also potential to extend the mine life if some or all of the Inferred Mineral Resources identified within the life-of-mine (“ LOM ”) production plan can be upgraded to higher confidence Mineral Resource categories. Mineralization remains open at depth.

Mining is carried out in Red Lake Mines using a combination of long hole, mechanized underhand or overhand cut-and-fill techniques, which allows greater ore extraction while generating minimal dilution. Stope sequencing is carefully analyzed and adapted to surrounding conditions to alleviate seismic activity induced by mining. Stope sequencing is based on an amalgamation of elastic/plastic stress modelling, seismic system data analysis and underground observations. Once mining blocks or lifts are completed, waste rock fill, paste fill, or a combination of both, is employed to fill the open excavation.

Mineral Resources classified as either Indicated or Measured are considered during conversion to Mineral Reserves. The requirements for Mineral Resources to be converted to Mineral Reserves are: only Measured and Indicated Mineral Resources can be included, dilution is included, and Mineral Reserves are supported by an economic mine plan.

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As part of day-to-day operations, we will continue to undertake reviews of the mine plan and consideration of alternatives to and variations within the mine plan. Alternative scenarios and reviews can be based on ongoing or future mining considerations, evaluation of different potential input factors, assumptions and corporate directives.

Processing and Recovery Operations

Campbell Complex

At the Campbell Complex, conventional crushing and grinding is followed by gravity concentration to recover free-milling gold. Refractory gold, finely disseminated in the arsenopyrite and pyrite matrix, is recovered by flotation followed by pressure oxidation, neutralization and carbon-in-leach. This stream joins the non-refractory flotation tails and is recovered by cyanidation/carbon-in-pulp (“ CIP ”) processing. The plant nominal capacity is 1,800 tonnes per day and the average process plant recovery is 94.5%.

Tailing can either be discharged to the tailing management area, or sent underground by piston pump for use as backfill as a paste. Cement and flyash is added to the paste and the paste fill is used to stabilize mined out openings in the Campbell Complex.

Red Lake Complex

Process facilities at the Red Lake Complex consist of three separate plants: the crushing plant; processing plant; and paste fill plant. Commercial production from the facilities began on January 1, 2001. The plant nominal capacity is 1,250 tonnes per day and the average process plant recovery is 97.0%.

The crushing plant is a two-stage process which reduces underground ore from about 30 centimetres to 1 centimetres. Underground ore from a coarse ore bin is fed to a jaw crusher and sizing screen. Screen oversize is crushed in a cone crusher and screen undersize is conveyed into a fine ore bin as plant feed material.

Unit operations in the processing plant include grinding, gravity concentrating, cyanidation, CIP, carbon elution and reactivation, electrowinning, bullion smelting/refining, cyanide destruction, flotation, and concentrate handling. Coarse gold is recovered from the ore via the gravity concentrating circuit. A portion of the ground slurry from the ball mill is fed to two Knelson concentrators which produce a gravity concentrate that is upgraded on a Diester table to a concentration of approximately 75% gold, and directly smelted into bullion. Bullion is then shipped to a refinery for later sale into the spot market. The Red Lake Complex processing plant also employs a typical sulphide flotation circuit generating a bulk sulphide concentrate. This concentrate is pumped as slurry to the Campbell Complex for processing in the autoclave.

Infrastructure, Permitting and Compliance Activities

Mining activities are conducted in and about the Municipality of Red Lake and are located near established power and road infrastructure. Local businesses offer most goods and services required for mineral exploration and development. Additional supplies can be sourced as needed from Thunder Bay, Winnipeg and Toronto. Together with multiple shaft accesses to the underground workings, we maintain administrative, technical, operations support, and processing facilities on the active sites. There are modern camp facilities to maintain the required permanent workforce for operations and construction.

Potable water is supplied by the municipality and paid for on a usage basis. Process water is taken from Balmer Lake and Sandy Bay. Power is supplied through Hydro One via the E2R radial line. Diesel-powered generators provide temporary emergency power in the event of a main electrical disruption to allow the mine site to maintain basic services. Waste rock is stored in designated areas at both the Red Lake and Campbell Complexes. The waste pads are located in a historic tailings area east of the site at the Red Lake Complex and on the northeast side of the main tailings pond at the Campbell Complex. The tailings storage facilities at the Campbell and Red Lake Complexes are currently permitted for dam raises that are expected to provide storage to 2020 and 2019 at current dam elevations, respectively. Additional tailings storage is available to 2040 as identified in the Red Lake Complex Long Range Tailings Plan. Future dam raises are currently in the planning and design phase.

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Environmental permits are required by various Federal, Provincial, and municipal agencies, and are in place for project operations. Red Lake Mines maintains a list of active environmental permits covering operation of the Campbell and Red Lake Complexes and Balmer Assemblage. We hold the appropriate permits under local, provincial, and Federal laws to allow current exploration activity and mining operations. No new permits are currently required, but existing permit amendments are required from time to time, and in 2018, applications for amendments may be made for tailings management area upgrades (i.e. dam raises), air/noise permits, permit to take water renewals, and exploration permitting. Permit amendments are routinely applied for and obtained to accurately reflect ongoing operational needs of the mining facilities.

The environmental management system and environmental and social management plans were developed in accordance with the appropriate Canadian regulations.

Arsenic remains a focus in most environmental programs for all project operations. Arsenopyrite is a main element in the local geology, contained in ore and waste rock and requires specific management in environmental programs.

Waste rock and ore are routinely sampled for acid rock drainage potential as per the internal programs for acid rock drainage and metal leaching. Since there are no significant acid rock drainage issues related to the waste and ore from the Campbell and Red Lake Complexes and Balmer Assemblage, waste rock materials can be used for construction purposes.

Active tailings facilities for the operations were designed by third-party consultants. Annual geotechnical and facility inspections are conducted by these firms. In addition, engineering assessments and investigations to enhance tails storage strategies are performed as required.

Water treatment processes are in place at both milling/tailings facilities to address the destruction of cyanide and metals in solution. Both the Campbell and Red Lake operations utilize passive wetland treatment technologies to assist with the reduction of ammonia from mining and milling processes. All effluent discharges to the environment comply with applicable laws.

Long-term development of site-specific water quality objectives for closure, the Campbell Complex West Dam groundwater program, and the long-term stabilization of underground arsenic storage facilities continue to be the focus of ongoing research and closure planning.

The mining complexes are situated on the edges of the Red Lake district communities which make them a part of the community landscapes. Given these proximities, operational and environmental considerations are paramount, as are our commitments to social, cultural, and community support. We currently have representation on various local organizations such as the local municipal planning boards, hospital boards, economic development board, and maintains an open dialogue with the community.

Capital and Operating Costs

Capital cost estimates are based on experience gained from current operations, 2017 budget data, and quotes received from manufacturers during 2017. Capital cost estimates include funding for infrastructure, mobile equipment replacement, development, drilling, and permitting as well as miscellaneous expenditures required to maintain production. Infrastructure requirements are incorporated in the estimates as appropriate. Mobile equipment is scheduled for replacement when operating hours reach threshold limits. Sustaining capital costs reflect current price trends. The remaining life-of-mine capital expenditure is estimated at $170.1 million.

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Operating cost estimates are based on actual historical data and include adjustments to reflect market conditions. The estimated average annual operating cost is $282.69 per tonne, consisting of $45.25 per tonne for processing, $170.54 per tonne for mining, and $66.90 per tonne for G&A.