Inco Superstack vs Naberezhnaya Tower

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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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Naberezhnaya Tower (Russian: ????? ?? H?????????, tr. Bashnya na Naberezhnoy, literally means Tower on the Embankment) is an office complex composed of two skyscrapers and a high-rise situated on plot 10 in the Moscow International Business Center (MIBC) in Moscow, Russia with a total area of 254,000 m2 (2,730,000 sq feet ). The buildings are named after the first three letters of the alphabet and by the bottom height to the tallest: the 17-story tall Tower A, the 27-story tall Tower B, along with the 59-story tall Tower C. Construction of the complex started in 2003, with Tower A being completed in 2004, Tower B in 2005, and Tower C at 2007. Tower C is the tallest building from the complex, with a height of 268.4 metres (881 feet ) and 59 stories. It is formerly the tallest building in Russia and Europe, surpassing the Triumph Palace, also in Moscow, in August 2007. Tower C was surpassed by its neighboring skyscraper Moscow Tower of the City of Capitals complex as the tallest building in July 2008.

Source: Wikipedia