Dismantling of the famous Superstack in Sudbury will begin in August. While many are sad to see it go, Vale Base Metals said it’s an important step forward in its environmental stewardship program. The Superstack is 381 metres (or 1,250 feet) high, 35 metres wide at the base and 16 metres wide at the top. It is the second-tallest chimney in the world, exceeded only by a power station chimney in Kazakhstan.
When it was completed in 1972, it was the tallest free-standing structure in the world. It dispersed emissions from mining, a critical step in improving Sudbury’s heavily damaged environmental landscape, which used to be dominated by black rock.
More recently, however, Vale’s $1 billion Clean AER Project led to the elimination of 100,000 metric tonnes of sulfur dioxide emissions each year (equivalent to 1,000 railway tanker cars of sulphuric acid), bringing emissions down to 30 per cent below the provincial standards. That meant the stack was no longer needed.
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