What's Their Growth Strategy?

I believe Teck will continue to grow.

Teck plans to continue "exploring for, acquiring, developing and operating world-class, long-life assets in stable jurisdictions that operate through multiple price cycles," according to the annual report.

The company's net income has grown significantly, on average, over the past 9 years (23.4% CAGR over 9 years). As long as the world continues to need copper, zinc, and steelmaking coal, Teck can continue to be a leader in the space.

While other mining companies operate in unstable parts of the world, Teck focuses on (mostly) stable areas - Canada, the United States, Chile, Mexico, and Peru.

The company currently makes most of its money through steelmaking coal. The US Energy Information Administration (EIA) projects US coal prices will increase through 2050 (Source: https://www.eia.gov/energyexplained/coal/prices-and-outlook.php).