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| subdivision_name1 = | subdivision_name2 = Clark | established_title = Incorporated | established_date = | government_type = Council-manager | leader_title = Mayor | leader_name = Andy Hafen (D) | leader_title1 = Manager | leader_name1 = Jacob Snow | established_date1 = April 16, 1953 | unit_pref = Imperial | area_magnitude = 1 E9 | area_total_km2 = 279.0 | area_land_km2 = 279.0 | area_water_km2 = 0.0 | population_as_of = 2010 | population_total = 257729 | pop_est_as_of = 2013 | population_est = 270811 (US: 71st) | population_density_km2 = 970.6 | timezone = PST | utc_offset = -8 | timezone_DST = PDT | utc_offset_DST = -7 | postal_code_type = ZIP codes | postal_code = 89002, 89009, 89011, 89012, 89014-89016, 89044, 89052, 89053, 89074, 89077 | area_code = 702 | elevation_ft = 1867 | latd = 36 |latm = 2 |latNS = N | longd = 114 |longm = 59 |longEW = W | area_total_sq_mi = | area_land_sq_mi = | area_water_sq_mi = | elevation_m = 538 | website = | blank_name = FIPS code | blank_info = 32-31900 | blank1_name = GNIS feature ID | blank1_info = 0856267 | footnotes = }} Henderson, officially the City of Henderson, is a city in Clark County, Nevada, United States. It is the second largest city in Nevada, after Las Vegas, with an estimated population of 270,811 in 2013.〔(【引用サイトリンク】 title=Annual Estimates of the Resident Population for Incorporated Places of 50,000 or More, Ranked by July 1, 2013 Population: April 1, 2010 to July 1, 2013 (PEPANNRSIP) )〕 The city is part of the Las Vegas metropolitan area, which spans the entire Las Vegas Valley. Henderson occupies the southeastern end of the valley, at an elevation of approximately . In 2011, ''Forbes'' magazine ranked Henderson as America's second safest city.〔http://www.forbes.com/sites/bethgreenfield/2011/12/15/americas-safest-cities/ | America's Safest Cities - Forbes〕 Henderson has also been named as "One of the Best Cities to Live in America" by ''Bloomberg Businessweek''.〔()〕 In 2014, Henderson was again ranked as one of the Top 10 "Safest Cities in the United States" by the FBI Uniform Crime Report.〔()〕 ==History== The township of Henderson first emerged in the 1940s during World War II with the building of the Basic Magnesium Plant. Henderson quickly became a main supplier of magnesium in the United States, which was called the "miracle metal" of World War II.〔Lelande Quick, Miracle Metal from Nevada Hills, (Desert Magazine, June 1944 ), pages 10-13〕 The plant supplied the US War Department with magnesium for incendiary munition casings and airplane engines, frames, and other parts. A quarter of all US wartime magnesium came from the Henderson Plant to strengthen aluminum, using 25% of Hoover Dam's power to separate the metal from its ore by electrolysis.〔Moore, David. (The Hoover Dam: A World Renowned Concrete Monument ) ''Roman Concrete'', 1999. Accessed: 26 February 2012.〕 Mayor Jim Gibson's grandfather, Fred D. Gibson, was one of the original engineers sent to Great Britain to learn the secret of creating the "miracle metal" which would eventually help the United States and its allies win the war. Although "born in America's defense", Henderson's future after World War II was uncertain. In 1947, magnesium production was no longer necessary for defense, and the majority of the 14,000 BMI employees moved away. Enrollment in the school system was reduced by two thirds and well over half the townsite houses, built to house plant workers, became vacant. In 1947, the United States War Asset Administration had offered Henderson for sale as war surplus property. In an effort to save the city, the Nevada Legislature spent a weekend visiting Henderson evaluating the possibility of state administration of Basic Magnesium. Within days of the visit, the legislators unanimously approved a bill giving the Colorado River Commission of Nevada the authority to purchase the industrial plants. Governor Vail Pittman signed the bill on March 27, 1947, helping save Henderson from becoming war surplus property. With the help of local industry, Henderson, Nevada, was officially incorporated on April 16, 1953 as the City of Henderson. On May 23, 1953, Henderson, with its population of 7,410, elected Dr. Jim French as the city's first mayor. Originally only about in size, the city quickly began to grow and flourish, reaching over in size today. In 1988, the Pacific Engineering and Production Company of Nevada (PEPCON) rocket fuel factory in the modern-day Gibson Springs neighborhood of Henderson caught fire. The fire quickly spread and engulfed the factory, spewing rocket fuel, smoke, and toxic fumes from the building. The factory was subsequently obliterated by a massive explosion caused by the fire, followed by six smaller explosions. The explosions sent shockwaves throughout Henderson and parts of the Las Vegas Valley, shattering glass and damaging buildings. The explosions also caused some earthquakes, some of which measured over 3.0 on the Richter magnitude scale. Two people were killed, and an additional 372 people were injured. The events of the PEPCON factory disaster spurred development in Henderson years later, from its historical industrial development to residential and commercial development. There are no signs of the massive PEPCON explosion on the site in which it happened; the site now consists mostly of small office buildings. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Henderson, Nevada」の詳細全文を読む スポンサード リンク
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