Inco Superstack vs The Shard

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The Inco Superstack in Sudbury, Ontario, with a height of 381 metres (1,250 ft), is the tallest chimney in Canada and the Western hemisphere, and the 2nd tallest freestanding chimney in the world after the GRES-2 Power Station in Kazakhstan. It's also the second tallest freestanding structure of any kind in Canada, behind the CN Tower but forward of First Canadian Place. It's the 40th tallest freestanding structure in the world. The Superstack is situated on top of the biggest nickel smelting operation in the world at Vale's Copper Cliff processing centre in the city of Greater Sudbury.

In 2018, Vale declared that the stack will be decommissioned and dismantled beginning in 2020. On July 28, 2020, Vale declared that the stack had been officially taken out of service, but would remain operational in standby mode for two more months as a backup in case of a malfunction in the new system, after which the dismantling of this Superstack will begin. In addition to further reducing sulfur dioxide emissions by 85 percent, the decommissioning of the pile is expected to cut the complex's natural gas consumption in half.

Source: Wikipedia

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The Shard, also referred to as the Shard of Glass, Shard London Bridge and Previously London Bridge Tower, is a 95-storey skyscraper, designed by the Italian architect Renzo Piano, in Southwark, London, that forms a Part of the Shard Quarter development.

Standing 309.6 metres (1,016 feet) high, the Shard is the tallest building in the United Kingdom, and the sixth-tallest construction in Europe. It is also the second-tallest free-standing structure in the United Kingdom, after the concrete tower of the Emley Moor transmitting station. It replaced Southwark Towers, a 24-storey office block constructed on the website in 1975. The Shard's construction began in March 2009; it was topped out on 30 March 2012 and inaugurated on 5 July 2012. Practical completion was achieved in November 2012. The tower's privately operated observation deck, The View from The Shard, was opened to the general public on 1 February 2013. The glass-clad pyramidal tower includes 72 habitable floors, with a viewing gallery and open observation deck on the 72nd floor, at a height of 244 metres (801 ft). The Shard was developed by Sellar Property Group on behalf of LBQ Ltd and is collectively owned by Sellar Property (5%) and the State of Qatar (95%). The Shard is managed by Real Estate Management (UK) Limited on behalf of the owners.

Source: Wikipedia