This report discloses sustainability data for the fiscal year ending December 31, 2020. The scope of this report covers all operations managed by Teck and also, where appropriate, key issues at exploration and development projects and at joint venture operations. Data for closed/legacy properties and joint ventures not operated by Teck is not presented unless otherwise stated. Operations included in this report are those actively managed by Teck, which include:

1. Carmen de Andacollo

2. Cardinal River¹

3. Elkview

4. Fording River

5. Greenhills

6. Highland Valley Copper

7. Line Creek

8. Quebrada Blanca

9. Red Dog

10. Trail Operations

Joint venture operations not managed by Teck but covered in some areas of this report are:

1. Antamina

2. Fort Hills

Development projects, including those managed by Teck and those not managed by Teck, that are covered in some areas of this report are:

1. Quebrada Blanca Phase 2 (QB2)

2. NuevaUnión

3. San Nicolás

4. Galore Creek

5. Mesaba

6. Schaft Creek

7. Zafranal

Countries where we sell our products are as follows:

• Brazil

• Canada

• Chile

• China

• Colombia

• Finland

• Germany

• India

• Indonesia

• Italy

• Japan

• Malaysia

• Mexico

• Netherlands

• Pakistan

• Philippines

• South Korea

• Spain

• Sweden

• Taiwan

• Thailand

• Turkey

• Ukraine

• United Kingdom

• United States

• Vietnam

Unless otherwise stated, we report data for our operations on a 100% ownership basis (e.g., for a 97.5%-owned operation, we report 100% of the data). Data is reported using the metric system and Canadian dollars, unless otherwise stated. Unless otherwise stated, all workforce data is limited to permanent and temporary employees.

Where available, we include comparative historical data to demonstrate trends. Historical data is reported based on the scope of the report for the respective year. The scope of the report can change year to year, depending on acquisitions or sales of assets. In our efforts to continually improve and standardize our annual reporting process, the interpretation of data from year to year can often change. Certain comparative amounts for prior years have been reclassified or restated to conform to the presentation adopted for this reporting period.

¹As of June 2020, Cardinal River Operations has transitioned to closure.