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References. [3][4][5][6] The John Hancock Center is a 100- story, 1,128-foot [7] supertall skyscraper located in Chicago, Illinois. Located in the Magnificent Mile district, the building was officially renamed 875 North Michigan Avenue in 2018. The skyscraper was designed by Peruvian-American chief designer Bruce Graham and Bangladeshi-American ...
Knife sharpener in Kabul, Afghanistan (1961) The Knife Grinder by Massimiliano Soldani (c.1700), Albertinum, Dresden A railway camp cook sharpens a knife blade on a stone wheel, 1927 Knife sharpening is the process of making a knife or similar tool sharp by grinding against a hard , rough surface, typically a stone , [ 1 ] or a flexible surface ...
The Willis Tower, originally and still commonly referred to as the Sears Tower, is a 110- story, 1,451-foot (442.3 m) skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), it opened in 1973 as the world's tallest ...
January 30, 1978 [1] The Gold Coast Historic District is a historic district in Chicago, Illinois. Part of Chicago's Near North Side community area, it is roughly bounded by North Avenue, Lake Shore Drive, Oak Street, and Clark Street. The Gold Coast neighborhood grew in the wake of the Great Chicago Fire. In 1882, millionaire Potter Palmer ...
The Chicago Spire was a skyscraper project in Chicago that was partially built between 2007 and 2008 before being cancelled. Located at 400 N. Lake Shore Drive, it would have stood 2,000 feet (610 m) high with 150 floors and been the tallest building in the Western Hemisphere. When originally proposed as the Fordham Spire in July 2005, the ...
Sharpening is the process of creating or refining the edge joining two non-coplanar faces into a converging apex, thereby creating an edge of appropriate shape on a tool or implement designed for cutting. Sharpening is done by removing material on an implement with an abrasive substance harder than the material of the implement, followed ...
Shearing, also known as die cutting, [1] is a process that cuts stock without the formation of chips or the use of burning or melting. Strictly speaking, if the cutting blades are straight the process is called shearing; if the cutting blades are curved then they are shearing-type operations. [2] The most commonly sheared materials are in the ...
February 6, 2008. 330 North Wabash (formerly IBM Plaza also known as IBM Building and now renamed AMA Plaza) is a skyscraper in downtown Chicago, Illinois, United States, at 330 N. Wabash Avenue, designed by architect Ludwig Mies van der Rohe (who died in 1969 before construction began). A small bust of the architect by sculptor Marino Marini ...
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