Tailings Management

Information on Tailings Storage Facilities of Third-Party Operators

“As an industry, it is our collective responsibility to protect the safety of the communities surrounding mine operations. Wheaton is supportive of greater transparency with regard to tailings management and welcomes the initiative on better disclosure. Our due diligence process has a strong focus on community and safety practices, including tailings storage facilities management.”
– Randy Smallwood, President and Chief Executive Officer, Wheaton Precious Metals

At Wheaton, we are committed to promoting responsible mining practices and pride ourselves in working with partners that share our values.

Wheaton and its subsidiaries generate revenue by entering into streaming agreements with third-party independent mining companies (collectively “Third-Party Operators”) with operating mines as well as exploration and development-stage mining projects. Wheaton is not involved in, nor does it control, the operational decisions of mine projects by Third-Party Operators.

As part of our ESG Due Diligence process, 10 Investment Principles guide Wheaton’s approach to evaluating potential streaming transactions as well as monitoring existing agreements. The purpose of these principles is to identify Third-Party Operators that appropriately manage their ESG and other risks in order to minimize Wheaton’s indirect exposure to those risks.

Throughout this process, current and potential partners’ tailings management systems are reviewed and assessed with a focus on safety. Please visit our ESG Due Diligence Process page for more information on how we conduct our due diligence.

In an effort to provide our shareholders with information concerning tailings storage facilities, we have aggregated links to our operating partners’ disclosure on this matter. Please see the table below for more information.

Mine Owner Mine(S) Location Website Link

Vale

Salobo, Sudbury1

Brazil, Canada

Vale on disclosure of tailings dams' information – Complete List

Newmont Goldcorp

Peñasquito2

Mexico

Tailings Fact Sheet

Church of England Tailings Management

Glencore

Antamina, Yauliyacu

Peru

Tailings Storage Facilities (TSFs)

TSF Table Data – South America

Hudbay Minerals

Constancia, 777

Peru, Canada

Mine Tailings Disclosure Table

Sibanye-Stillwater

Stillwater, East Boulder

USA

Sibanye-Stillwater’s Tailings storage facilities’ information

First Majestic Silver

San Dimas

Mexico

San Dimas Technical Report 2014 (pg. 105-106)

Lundin Mining

Zinkgruvan, Neves-Corvo

Sweden, Portugal

Tailings Fact Sheet

Eldorado Gold

Stratoni

Greece

Tailings Stewardship and Facilities Overview

Leagold Mining

Los Filos 3

Mexico

Leagold Q1 2019 MD&A

Almina

Aljustrel

Portugal

Privately owned company 4

1 Comprised of the Coleman, Copper Cliff, Garson, Stobie, Creighton and Totten gold interests. The Stobie gold interest was placed into care and maintenance as of May 2017

2 As per Newmont Goldcorp’s letter titled “Tailings Management Approach and Inventory Disclosure,” dated June 3, 2019, detailed information on Peñasquito is not available at this time. Newmont Goldcorp has stated that due to Newmont and Goldcorp combining on April 18, 2019, they intend to provide an update to their disclosure that will will incorporate the legacy Goldcorp sites, which would include Peñasquito.

3 Los Filos is a heap leach operation and therefore has no tailings facilities.

4Aljustrel is privately held by Almina - Minas do Alentejo, S.A. with limited publicly available information.