[4] In 2020, Teck abandoned plans for a second, larger C$20 billion open-pit petroleum-mine proposal—Frontier Mine—25 km (16 mi) south of Wood Buffalo National Park and north of Fort McMurray in northeast Alberta.

[4] Teck's application to develop a second larger C$20.0 billion open-pit petroleum mine—Frontier Mine—near Wood Buffalo National Park and north of Fort McMurray, Alberta, was withdrawn by the company in 2020.

[1]: 37  Teck credits this increase to "higher steelmaking coal and copper prices" as well as the "sale of blended bitumen from our Fort Hills oil sands mine".

Cominco started in 1906 as The Consolidated Mining and Smelting Company of Canada, formed by the amalgamation of several units controlled by the Canadian Pacific Railway.

Cominco's core Sullivan Mine in Kimberley, British Columbia which began production of lead, zinc, silver and tin in 1909, would operate for more than 90 years until its ore reserves exhausted in 2001.

[11][12][13] An American group of investors led by Charles Land Denison, including International Nickel Company (INCo)'s Ashton W. Johnston, acquired two thirds of Teck-Hughes' shares.

The purchase resulted in Teck taking on US$9.8 billion in debt;[16] the company suspended dividends, cut spending, and sold some assets to save money.

[16] Coal production targets were also lowered by 20% in response to declining worldwide demand for steel, in the midst of the global financial crisis.

Besides expanding into the energy sector, the company was also executing two major projects in Chile and planning a C$600 million restart of its Quintette Mine near Tumbler Ridge, British Columbia.

In 2018, Teck produced 26.2 million tonnes of coal from six mines in southeastern British Columbia and western Alberta,[1]: 2  with most of it exported to countries in the Asia-Pacific region.

In 2020, Teck announced an agreement to purchase the city of Kimberley, British Columbia's debt stake in the SunMine solar electricity generating station.

The 1.05 MW facility was constructed in 2015 on land reclaimed from Teck's Sullivan Mine, which had produced zinc, lead, and silver until its closing in 2001.

[31] In 2009, for the first time since the 1980s, what is now known as the Alberta Energy Regulator (AER) changed the oil sands mining boundaries in the Athabasca oil sands in northeastern Alberta, Canada, partly in response to successful exploratory work that Teck and others had launched "north of the known limits"—on the west and east sides of the Athabasca River.

[9] In the summer of 2019, a federal-provincial review concluded that Frontier Mine would be "in the public interest, even though it would be likely to harm the environment and the land, resources and culture of Indigenous people.

[34][e] In a statement, Jason Nixon, Alberta's Environment Minister said that "[A]ll 14 First Nation groups in the region of the proposed mine have economic agreements of support with Teck.

It stated, "The promise of Canada's potential will not be realized until governments can reach agreement around how climate policy considerations will be addressed in the context of future responsible energy sector development.

It is our hope that the decision to withdraw will help to create both the space and impetus needed for this critical discussion to take place for the benefit of all Canadians."

[citation needed] The Confederated Tribes of the Colville Reservation filed a lawsuit against Teck Cominco in 2004, claiming the company had dumped 140,000 tons of slag directly into rivers adjacent to its Trail smelter between 1896 and 1995, polluting the surface water, ground water and sediment of the upper Columbia River and Lake Roosevelt with hazardous metals including arsenic, cadmium, mercury, lead, copper and zinc.

"[49] The agreement, reached on the eve of the trial initiated by the Colville Confederated Tribes, stipulates that some hazardous materials in the slag discharged from Teck's smelter in Trail, B.C., ended up in the Upper Columbia River south of the border.

[53] According to a March 8, 2021 article in The Narwhal, concerns have been raised about selenium pollution leaching from Teck Resources' Elk Valley open pit coal mines' waste rock, which is upstream from the Lake Koocanusa water system.

[57][58] In the spring of 2020, Teck Resources had "reported a dramatic decline in adult westslope cutthroat trout in Elk Valley waterways closest to its mines".

[61] In 2007, the company's Red Dog mine operation in north-western Alaska has been ranked by the U.S. Environmental Protection Agency as one of the most polluting facilities in the United States based on output tonnage of toxic waste, largely (over 99%) in the form of blasted and moved, but otherwise unprocessed, waste rock from mining operations.

On November 30, 2007, the company released the final report of its six-year study, with the oversight of the Alaska Department of Environmental Conservation, of risks of dust escaping from traffic along the DeLong Mountain Regional Transportation System Road.

The final report incorporates formal comments and input from a wide range of government agencies and stakeholders, including local village residents.

I think we need to look at how we engage with foreign entities, whether they're governments or companies, in terms of buying our natural resources and ensure we are not also giving up part of our boardroom sovereignty.

[69] On their 2007 web page, Teck Resources listed over two dozen awards that the company had received from 2004 through 2007, for specific mines and operations.

This includes awards for individual operations that had low accident frequency, good underground safety, volunteerism, conservation, reclamation, and excellence in business.