Inco Superstack vs Trump International Hotel & 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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The Trump International Hotel and Tower is a skyscraper condo-hotel in downtown Chicago, Illinois.

The building, called for businessman and later U.S. president Donald Trump, was designed by architect Adrian Smith of Skidmore, Owings and Merrill. Bovis Lend Lease constructed the 98-story structure, which reaches a height of 1,388 ft (423.2 m) including its spire, its roof topping out at 1,171 ft (357 m). It's next to the main branch of the Chicago River, with a view of the entrance to Lake Michigan past a series of bridges across the river. The building received publicity once the winner of the first season of The Apprentice reality television show, Bill Rancic, chose to handle the construction of the tower over handling a new Trump National Golf Course and resort in Los Angeles. Trump announced in 2001 that the skyscraper would become the tallest building in the world, but following the September 11 attacks that same year, the architects scaled back the building's plans, and its design underwent several revisions. When topped out in 2009, it turned into the second-tallest construction in the U.S.. It surpassed the city's John Hancock Center as the construction with the maximum residence (apartment or condominium ) in the world, and held this title until the conclusion of the Burj Khalifa. The design of the building includes, from the bottom up, retail space, a parking garage, a hotel and condominiums. The 339-room hotel opened for business with limited accommodations and services on January 30, 2008, then full lodging and services on April 28. The construction topped out in late 2008 and construction was finished in 2009. Sixteen was one of five restaurants in Chicago with a Michelin Guide two-star evaluation in 2016 and one of three five-star Forbes-rated restaurants in town until it closed in 2018. The spa is one of six with a four-star Forbes score in the Chicago area in 2015.

Source: Wikipedia