In the year when a MAC member company undergoes external verification, the CEO or an authorized officer of the company will provide a letter of assurance confirming that the verification was conducted.
2024 Letters of Assurance
2023 Letters of Assurance
- Eldorado Gold
- Windsor Salt
- Graymont
- Glencore Copper
- De Beers Canada Inc.
- Syncrude Canada Ltd.
- Teck Resources Limited
- Canadian Natural Resources Limited
- Arch Resources, Inc.
- Glencore Nickel
- New Gold Inc.
- Niobec
- Baffinland Iron Mines Corporation
- Pan American Silver
- Rio Tinto
- Tata Steel Canada
- Barrick Gold Corporation
2022 Letters of Assurance
- Stornoway Diamonds
- Glencore Nickel
- Eldorado Gold
- Hecla
- Suncor Energy Inc.
- Teck Resources Limited
- Sherritt International
- Newmont Corporation
- TSM – AEM Letter of Assurance for the year 2022
- Agnico Eagle Mines
- Minerai de fer Québec
- Vale
- Hudbay Minerals Inc.
- Yamana
- ArcelorMittal Exploitation minière Canada s.e.n.c (AMEM) et ArcelorMittal Infrastructure Canada s.e.n.c. (AMIC)
- Newmont Corporation
- Sherritt International
- Stornoway Diamonds
- Pan American Silver
2021 Letters of Assurance
- Teck Resources Limited
- Copper Mountain
- Agnico Eagle Mines
- New Gold Inc.
- Canadian Royalties
- First Quantum Minerals Ltd.
- Agnico Eagle Mines
2020 Letters of Assurance
2019 Letters of Assurance
- Glencore Nickel
- Rio Tinto
- ArcelorMittal Exploitation minière Canada s.e.n.c (AMEM) et ArcelorMittal Infrastructure Canada s.e.n.c. (AMIC)
- Glencore Zinc
- Teck Resources Limited
- De Beers Canada Inc.
- Syncrude Canada Ltd.
- Baffinland Iron Mines Corporation
- New Gold Inc.
- Glencore Copper
- Rio Tinto
2018 Letters of Assurance
2017 Letters of Assurance
- Agnico Eagle Mines
- Cameco Corporation
- Arctic Canadian Diamond Company Ltd.
- First Quantum Minerals Ltd.
- Newmont Corporation
- IAMGOLD Corporation
- Imperial Metals Corporation
- Nyrstar
- Teck Resources Limited
2016 Letters of Assurance
- ArcelorMittal Exploitation minière Canada s.e.n.c (AMEM) et ArcelorMittal Infrastructure Canada s.e.n.c. (AMIC)
- Barrick Gold Corporation
- De Beers Canada Inc.
- Glencore Copper
- Glencore Zinc
- Rio Tinto
- Syncrude Canada Ltd.
- Teck Resources Limited
- Rio Tinto
2015 Letters of Assurance
2014 Letters of Assurance
- Agnico Eagle Mines
- Cameco Corporation
- Arctic Canadian Diamond Company Ltd.
- First Quantum Minerals Ltd.
- IAMGOLD Corporation
- Taseko Mines Ltd.
- Teck Resources Limited
2013 Letters of Assurance
- Barrick Gold Corporation
- De Beers Canada Inc.
- Glencore Nickel
- Iron Ore Company of Canada
- New Gold Inc.
- Syncrude Canada Ltd.
2012 Letters of Assurance
2011 Letters of Assurance
2010 Letters of Assurance
- ArcelorMittal Exploitation minière Canada s.e.n.c (AMEM) et ArcelorMittal Infrastructure Canada s.e.n.c. (AMIC)
- Barrick Gold Corporation
- De Beers Canada Inc.
- Diavik Diamond Mines Inc
- Xstrata Copper Canada
2009 Letters of Assurance
2008 Letters of Assurance
2007 Letters of Assurance
- Barrick Gold Corporation
- Quebec Cartier Mining
- Teck Resources Limited
- Xstrata Copper Canada
- Syncrude Canada Ltd.
