Inco Superstack vs Keangnam Hanoi Landmark 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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AON Hanoi Landmark Tower (or AON Landmark 72) is a mixed-use supertall skyscraper at Pham Hung road, Nam T? Liêm district, Hanoi, Vietnam.

The complex contains a single 72-story mixed-use tower with the height of 350 m and two 48-storey resort twin towers. Landmark 72 is located on an area of 46,054 m2 and the whole floor area is 609,673 m2, ranked 5th as the largest floor area of one building in the world. The investor, and executor and operator, of the complex is that the South Korea-based company Keangnam Enterprises, Ltd.. The investment capital is estimated at US$1.05 billion.On November 2010, the main tower reached approximately 300 metres, making it the tallest building and construction in Vietnam. On 24 January 2011, the main tower topped out at 350 metres; it became the tallest building in Vietnam while the other two towers had topped out months before using the height of 212 metres. The complex includes a 5-star InterContinental hotel, offices, amusement areas, retail spaces, clinics and convention centres. The complex opened on 18 May 2012. Landmark 72 is the world's 35th-highest construction and previously was the greatest on Indochina Peninsula. Keangnam Enterprises indirectly owned a 70-per cent stake in Landmark 72. The company spent over US$ 1 billion with US$ 510 million borrowed from banks.On 11 June 2008, an agreement was signed between the building owner and the InterContinental Hotels Group to run the 359-room resort under InterContinental Hanoi Landmark 72 with 9 hotel floors from 62nd floor to 70th floor (Hotel Club Lounge located on the 71st Floor). Landmark 72 is the website of Vietnam's highest stair climbing race, the Vietnam Landmark 72 Hanoi Vertical Run. On 30 September 2012, runners competed for the first time to be the fastest to ascend the tower's 1,914 steps. Reported in ancient 2016 was that a Vietnamese court valued the complex at US$ 770 million in May 2015 and AON Holdings from South Korea would assume the bank loan by paying US$ 373.4 million to become the majority owner.In early 2017, it emerged that a bribery scheme associated with a proposed sale of Landmark 72 building complex in 2014 caused the arrest and charge of former UN Secretary-General Ban Ki-moon's nephew and charge of Ban's brother, Ban Ki-sang, an executive of South Korean company Keangnam Enterprises Co Ltd.. In 2013, Keangnam was facing a liquidity crisis and intended to refinance or sale of the complex. When the'deal' eventually fell through, Keangnam entered into court receivership in South Korea. Additionally, Malcolm Albert Harris, a self proclaimed New York City fashion designer who pled guilty to stealing US$500,000 as part of a phony negotiation to sell Landmark 72 to a Qatari royal.

Source: Wikipedia