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Tartan Track
Tartan track is a trademarked all-weather synthetic track surfacing made of polyurethane used for track and field competitions, manufactured by 3M. The original production was in 1967, and the product was later reformulated to eliminate the use of mercury. Because the "Tartan" product was widely successful in its time, the name Tartan has been used as a genericized trademark for description of an all-weather running track. Athletic Polymer Systems, a subsidiary of MCP Industries, Inc., manages the installation of Tartan-branded running track. History According to Minnesota Mining and Manufacturing ( 3M), developed its "Tartan" track and turf products in the late 1950s, and ''Sports Illustrated'' called its development a breakthrough in 1963. The track product was made for running and horseracing tracks and the turf was made for stadiums. These were the first man made track and turf for athletics. Tartan track was tested for use at a track and field competition in the Los ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athletics Track
An all-weather running track is a rubberized, artificial Race track#Surfaces, running surface for track and field athletics. It provides a consistent surface for competitors to test their athletic ability unencumbered by adverse weather conditions. Historically, various forms of dirt, rocks, sand, and crushed cinder track, cinders were used. Many examples of these varieties of track still exist worldwide. Surfaces Starting in 1954, artificial surfaces using a rubberized asphalt, combination of rubber and asphalt began to appear. An artificial warm-up track was constructed for the 1956 Summer Olympics in Melbourne, Australia. During the 1960s many of these tracks were constructed; examples still exist today. In the mid-1960s Tartan tracks were developed, surfaced with a product by 3M. The name ''Tartan'' is a trademark, but it is sometimes used as a generic trademark, genericized trademark. This process was the first to commercialize a polyurethane surface for running tracks, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Don Bowden
Donald Paul Bowden (born August 8, 1936) is an American middle-distance runner. He competed in the 1500 m at the 1956 Summer Olympics, and in 1957 became the first American to run a mile within four minutes. At the 1956 Olympics, he failed to reach the final, coming 11th in his qualifying heat. , Sport Statistics – International Competitions Archive. Retrieved October 28, 2013. Despite having previously run only a few full mile races, on June 1, 1957, he clocked a 3:58.7, setting a new American record.Don Bowden , USA Track and Field – Hall of Fame. Retrieved October 28, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tire Recycling
Tire recycling, or rubber recycling, is the process of recycling waste tires that are no longer suitable for use on vehicles due to wear or irreparable damage. These tires are a challenging source of waste, due to the large volume produced, the durability of the tires, and the components in the tire that are ecologically problematic. Because tires are highly durable and non-biodegradable, they can consume valuable space in landfills. If waste tires are improperly managed they may cause rubber pollution. In 1990, it was estimated that over 1 billion scrap tires were in stockpiles in the United States. As of 2015, only 67 million tires remain in stockpiles. From 1994 to 2010, the European Union increased the amount of tires recycled from 25% of annual discards to nearly 95%, with roughly half of the end-of-life tires used for energy, mostly in cement manufacturing. Pyrolysis and devulcanization could facilitate recycling. Aside from use as fuel, the main end use for tires remain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial Turf
Artificial turf is a surface of synthetic fibers made to look like natural grass, used in sports arenas, residential lawns and commercial applications that traditionally use grass. It is much more durable than grass and easily maintained without irrigation or trimming, although periodic cleaning is required. Stadiums that are substantially covered and/or at high latitudes often use artificial turf, as they typically lack enough sunlight for photosynthesis and substitutes for solar radiation are prohibitively expensive and energy-intensive. Disadvantages include increased risk of injury especially when used in athletic competition, as well as health and environmental concerns about the petroleum and toxic chemicals used in its manufacture. Artificial turf first gained substantial attention in 1966, when ChemGrass was installed in the year-old Astrodome, developed by Monsanto and rebranded as AstroTurf, now a generic trademark (registered to a new owner) for any artificial tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Spokesman-Review
''The Spokesman-Review'' is a daily broadsheet newspaper based in Spokane, Washington, the city's sole remaining daily publication. It has the third-highest readership among daily newspapers in the state, with most of its readership base in eastern Washington and northern Idaho. History ''The Spokesman-Review'' was formed from the merger of the ''Spokane Falls Review'' (1883–1894) and the ''Spokesman'' (1890–1893) in 1893 and first published under the present name on June 29, 1894. The ''Spokane Falls Review'' was a joint venture between local businessman, A.M. Cannon and Henry Pittock and Harvey W. Scott of '' The Oregonian''. ''The Spokesman-Review'' later absorbed its competing sister publication, the afternoon '' Spokane Daily Chronicle''. Long co-owned, the two combined their sports departments in late 1981 and news staffs in early 1983. The middle name "Daily" was dropped in January 1982, and its final edition was printed on Friday, July 31, 1992. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevation
The elevation of a geographic location (geography), ''location'' is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational equipotential surface, surface (see Geodetic datum#Vertical datum, Geodetic datum § Vertical datum). The term ''elevation'' is mainly used when referring to points on the Earth's surface, while ''altitude'' or ''geopotential height'' is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit, and ''three-dimensional space, depth'' is used for points below the surface. Elevation is not to be confused with the distance from the center of the Earth. Due to the equatorial bulge, the summits of Mount Everest and Chimborazo (volcano), Chimborazo have, respectively, the largest elevation and the largest ECEF, geocentric distance. Aviation In aviation, the term ''elevation'' or ''aerodrome elevation'' is defined by the IC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Lake Tahoe, California
South Lake Tahoe is the most populous incorporated city in El Dorado County, California, El Dorado County, California, United States, in the Sierra Nevada mountains. The city's population was 21,330 at the 2020 census, down from 21,403 at the 2010 census. The city, along the southern edge of Lake Tahoe, extends about west-southwest along U.S. Route 50 in California, U.S. Route 50, also known as Lake Tahoe Boulevard. The east end of the city, on the California–Nevada state line right next to the town of Stateline, Nevada, is mainly geared towards tourism, restaurants, hotels, and Heavenly Mountain Resort with the Nevada casinos just across the state line in Stateline. The western end of town is mainly residential, and clusters around "The Y", the intersection of US 50, California State Route 89, State Route 89, and the continuation of Lake Tahoe Boulevard after it loses its federal highway designation. Geography According to the United States Census Bureau, the city has a total ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an international border with the Mexico, Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the List of states and territories of the United States by population, largest state by population and List of U.S. states and territories by area, third-largest by area. Prior to European colonization of the Americas, European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following Mexican War of Independence, its successful war for independence, but Mexican Cession, was ceded to the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echo Summit
Echo Summit is a mountain pass over the Sierra Nevada in the western United States, located in eastern El Dorado County, California. At above sea level, it is the highest point on U.S. Route 50 in California, which traverses it at postmile 66.48 between Twin Bridges and Meyers, south of Lake Tahoe. The "Sierra Nevada Southern Route" (aka the "Pioneer Route") of the Lincoln Highway, the first road across the United States, was routed over nearby Johnson Pass in 1913. The current alignment over Echo Summit was constructed between 1936 and 1939. The "Sierra Nevada Northern Route" of the Lincoln Highway went over Donner Pass. Echo Summit is a trailhead for the Pacific Crest National Scenic Trail.1968 Olympians Return to Echo S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jesse Owens
James Cleveland "Jesse" Owens (September 12, 1913 – March 31, 1980) was an American track and field athlete who made history at the Athletics at the 1936 Summer Olympics, 1936 Olympic Games by becoming the first person to win four gold medals in a single Olympics. He is widely regarded as one of the greatest athletes in track and field history. Owens excelled in events like short Sprint (running), sprints and the long jump and was recognized in his lifetime as "perhaps the greatest and most famous athlete in track and field history". He won four events and set five world records and tied another, all in less than an hour, at the 1935 Big Ten Conference, Big Ten Championships in Ann Arbor, Michigan, a feat that has never been equaled and has been called "the greatest 45 minutes ever in sport". He won four National Collegiate Athletic Association, NCAA titles in both 1935 and 1936, bringing his total to eight—an unparalleled achievement that remains unmatched to this day. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
