Inco Superstack

The Inco Superstack is a flue-gas stack at Vale's Copper Cliff processing facility, rising 381 meters tall and ranking as the tallest chimney in Canada. The structure towers over the industrial complex and can be seen from various points across the city.

The International Nickel Company built this flue-gas stack in 1972 to manage emissions from mining and smelting operations in the region. The project was a response to growing concerns about air quality linked to intensive industrial activity.

The stack defines Greater Sudbury's skyline and stands as a visible reminder of the region's mining and metal-processing heritage that shaped daily life here for generations. Locals and visitors recognize it as a landmark tied to the area's industrial identity and economic history.

The structure sits on Vale's facility grounds and can be viewed from several points across the city, especially on clear days. Best views often come from a distance or from elevated spots in town where you can take in its full height.

During its construction in 1970, the structure experienced a severe tornado that caused it to sway dramatically yet it sustained no structural damage. This event demonstrated the remarkable resilience of the design against extreme weather conditions.