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Montgomery-Gibbs Executive Airport
Montgomery-Gibbs Executive Airport , formerly known as Montgomery Field and Gibbs Field, is a public airport in San Diego, California, United States, six miles (10 km) north of downtown San Diego. The airport covers and has three runways, one public and two private helipads. The runways are 28 Right/10 Left-28 Left/10 Right parallels and 05/23. History First known as Gibbs Field, the airport opened in July 1940 as an all-way clay and gravel surface airfield. It was founded by William Gibbs (1910–2016). In 1950, the airport was renamed Montgomery Field in honor of John Joseph Montgomery, an aviation pioneer who in 1884–1886 made the first manned, controlled, heavier-than-air flights in the United States from Otay Mesa south of San Diego starting with a glider designed in 1883. Montgomery-Gibbs assumed its current name in 2016 to recognize both of the airport's previous namesakes. World War II During World War II, control of the airport was assumed by the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asphalt
Asphalt, also known as bitumen (, ), is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used. Full text at Internet Archive (archive.org) The word is derived from the Ancient Greek ἄσφαλτος ''ásphaltos''. The largest natural deposit of asphalt in the world, estimated to contain 10 million tons, is the Pitch Lake located in La Brea in southwest Trinidad (Antilles island located on the northeastern coast of Venezuela), within the Siparia Regional Corporation. The primary use (70%) of asphalt is in Road surface, road construction, where it is used as the glue or binder mixed with construction aggregate, aggregate particles to create asphalt concrete. Its other main uses are for bituminous waterproofing products, including production of roofing felt and for sealing flat roofs. In material sciences an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
