The company has been working to reduce its debt, which stood at $6.97 billion at the end of June, down from $9.6 billion at the end of 2015.

Teck is working on putting some infrastructure assets, including the Waneta Dam and Ridley coal terminal in British Columbia, "into a position that if we get a price that makes sense for us we, would act on it," Millos said. Such deals could be time consuming to close, he added.Teck, which also mines zinc and copper, has several non-core exploration projects that it could sell. Those properties could generate "hundreds of millions of dollars", but the current market is challenging, Millos said.

(Reporting by Susan Taylor in Toronto; Writing by Nicole Mordant; Editing by Lisa Shumaker)