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Bone Valley
The Bone Valley is a region of central Florida, encompassing portions of present-day Hardee, Hillsborough, Manatee, and Polk counties, in which phosphate is mined for use in the production of agricultural fertilizer. Florida currently contains the largest known deposits of phosphate in the United States. Process Large walking draglines, operating twenty-four hours a day in surface mines, excavate raw pebble phosphate mixed with clay and sand (known as matrix). The matrix contains a number of chemical impurities, including naturally occurring uranium at concentrations of approximately 100 ppm. The matrix is then dropped into a pit where it is mixed with water to create a slurry, which is then pumped through miles of large steel pipes to washing plants. These plants crush, sift, and separate the phosphate from the sand, clay, and other materials, and mix in more water to create a granular rock termed wetrock. The wetrock, which is typically of little use in raw form, is then mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diammonium Phosphate
Diammonium phosphate (DAP; IUPAC name diammonium hydrogen phosphate; chemical formula (NH4)2(HPO4) is one of a series of water-soluble ammonium phosphate salts that can be produced when ammonia reacts with phosphoric acid. Solid diammonium phosphate shows a dissociation pressure of ammonia as given by the following expression and equation: : At 100 °C, the dissociation pressure of diammonium phosphate is approximately 5 mmHg. According to the diammonium phosphate MSDS from CF Industries, Inc., decomposition starts as low as 70 °C: "Hazardous Decomposition Products: Gradually loses ammonia when exposed to air at room temperature. Decomposes to ammonia and monoammonium phosphate at around 70 °C (158 °F). At 155 °C (311 °F), DAP emits phosphorus oxides, nitrogen oxides and ammonia." Uses DAP is used as a fertilizer. When applied as plant food, it temporarily increases the soil pH, but over a long term the treated ground becomes more acidic than before, upon nitrifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Punta Gorda, Florida
, nickname = , settlement_type = List of municipalities in Florida, City , motto = , image_skyline = Punta Gorda City Hall.jpg , imagesize = 250px , image_caption = Punta Gorda City Hall , image_flag = , flag_size = , image_seal = , seal_size = , image_blank_emblem = , blank_emblem_type = , blank_emblem_size = , image_map = Charlotte_County_Florida_Incorporated_and_Unincorporated_areas_Punta_Gorda_Highlighted.svg , mapsize = 250x200px , map_caption = Location in Charlotte County, Florida, Charlotte County and the state of Florida , subdivision_type = List of sovereign states, Country , subdivision_name = United States , subdivision_type1 = U.S. state, State , subdivision_name1 = Florida , subdivision_type2 = List of counties in Florid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcadia, Florida
Arcadia is a city and county seat of DeSoto County, Florida, United States. Its population was 7,637 as of the 2010 census, with an estimated population of 7,722 in 2014. Arcadia's Historic District is listed on the National Register of Historic Places. History According to ''The Atlas of Florida'', "The Rev. James Madison ("Boss") Hendry (1839–1922) named the town in honor of Arcadia Albritton (1861–1932), a daughter of Thomas H. and Fannie (Waldron) Albritton, pioneer settlers. Arcadia had baked him a cake for his birthday, and he appreciated it so much that he named the city after her." In 1886, transportation improved in Arcadia when the Florida Southern Railway (later the Atlantic Coast Line Railroad) was built through Arcadia on its way from Bartow to Punta Gorda. The railway caused Arcadia to grow significantly, which led to it becoming incorporated a year later. A second railroad line, the Charlotte Harbor and Northern Railway (later the Seaboard Air Line R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florida Southern Railway
The Florida Southern Railway (later known as the Florida Southern Railroad) was a railroad that operated in Florida in the late 1800s. It was one of Florida's three notable narrow gauge railway when it was built along with the South Florida Railroad and the Orange Belt Railway. The Florida Southern was originally chartered to run from Lake City south through central Florida to Charlotte Harbor. However, with the influence of Henry B. Plant, it operated with two discontinuous segments that would be part of the Plant System, which would later become part of the Atlantic Coast Line Railroad. History Original Charter The Florida Southern Railway was first chartered as the Gainesville, Ocala, and Charlotte Harbor Railroad in 1879, with a planned route from Lake City to Charlotte Harbor with a branch to Palatka to connect with steamboats on the St. Johns River. The name was then changed to the Florida Southern Railway in 1881. The first segment of the line opened on Augus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Narrow Gauge Rail Transport
A narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge narrower than standard . Most narrow-gauge railways are between and . Since narrow-gauge railways are usually built with tighter curves, smaller structure gauges, and lighter rails, they can be less costly to build, equip, and operate than standard- or broad-gauge railways (particularly in mountainous or difficult terrain). Lower-cost narrow-gauge railways are often used in mountainous terrain, where engineering savings can be substantial. Lower-cost narrow-gauge railways are often built to serve industries as well as sparsely populated communities where the traffic potential would not justify the cost of a standard- or broad-gauge line. Narrow-gauge railways have specialised use in mines and other environments where a small structure gauge necessitates a small loading gauge. In some countries, narrow gauge is the standard; Japan, Indonesia, Taiwan, New Zealand, South Africa, and the Aust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Covered Hopper
A covered hopper is a self-clearing enclosed railroad freight car with fixed roof, sides, and ends with openings for loading through the roof and bottom openings for unloading. Covered hopper cars are designed for carrying dry bulk loads, varying from grain to products such as sand and clay. The cover protects the loads from the weather. Dry cement would be very hard to unload if mixed with water in transit, while grain would be likely to rot if exposed to rain. History While hoppers had long been used to carry mined products like coal, ore, and gravel; boxcars were used for granular materials requiring protection from moisture until waterproof covers were devised for hopper cars. Gravity flow through the bottom of the hopper car simplifies unloading granular bulk commodities. Although removable canvas covers are sometimes used to protect moisture sensitive commodities in open hopper cars, a metal top with waterproof loading hatches provides superior protection. These loadin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unit Train
A unit train, also called a block train or a trainload service, is a train in which all cars (wagons) carry the same commodity and are shipped from the same origin to the same destination, without being split up or stored en route. They are distinct from wagonload trains, which comprise differing numbers of cars for various customers. Unit trains enable railways to compete more effectively with road and internal waterway transport systems. Time and money is saved by avoiding the complexities and delays that would otherwise be involved with assembling and disassembling trains at rail yards near the origin and destination. Unit trains are particularly efficient and economical for high-volume commodities. Since they often carry only one commodity, cars are of all the same type; often the cars are identical. Use Unit trains are typically used for the transportation of bulk goods. These can be solid substances such as: * Track ballast or gravel * Iron ore from mines to ports or s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Tampa Bay
Port Tampa Bay, known as the Port of Tampa until January 2014, is the largest port in the state of Florida and is overseen by the Tampa Port Authority, a Hillsborough County agency. The port is located in Tampa, Florida near downtown Tampa's Channel District. The port directly accesses Tampa Bay on the western coast of the Florida Suncoast, and is approximately 25 sea miles from the Gulf of Mexico. The port district includes parts of Tampa Bay, Hillsborough Bay, McKay Bay, Old Tampa Bay and the Hillsborough River. The port serves container ships, tank ships, and cruise lines. As of 2013, Port Tampa Bay ranks 16th in the United States by tonnage in domestic trade, 32nd in foreign trade, and 22nd in total trade. It is the largest, most diversified port in Florida, has an economic impact of more than $15.1 billion, and supports over 80,000 jobs. Cargo shipping includes bulk and tanker ships, as well as roll-on/roll-off ships and container cargo ships. The port additionally operates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land, the List of countries and territories by land borders, most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third List of countries and dependencies by area, largest country by total land area. The country consists of 22 provinces of China, provinces, five autonomous regions of China, autonomous regions, four direct-administered municipalities of China, municipalities, and two special administrative regions of China, Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the List of cities in China by population, most populous cit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tampa Bay
Tampa Bay is a large natural harbor and shallow estuary connected to the Gulf of Mexico on the west-central coast of Florida, comprising Hillsborough Bay, McKay Bay, Old Tampa Bay, Middle Tampa Bay, and Lower Tampa Bay. The largest freshwater inflow into the bay is the Hillsborough River, which flows into Hillsborough Bay in downtown Tampa. Many other smaller rivers and streams also flow into Tampa Bay, resulting in a large watershed area. The shores of Tampa Bay were home to the Weedon Island Culture and then the Safety Harbor culture for thousands of years. These cultures relied heavily on Tampa Bay for food, and the waters were rich enough that they were one of the few Native American cultures that did not have to farm. The Tocobaga was likely the dominant chiefdom in the area when Spanish explorers arrived in the early 1500s, but there were likely smaller chiefdoms on the eastern side of the bay which were not well documented. The indigenous population had been decimat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluorine
Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. As the most electronegative reactive element, it is extremely reactive, as it reacts with all other elements except for the light inert gases. Among the elements, fluorine ranks 24th in universal abundance and 13th in terrestrial abundance. Fluorite, the primary mineral source of fluorine which gave the element its name, was first described in 1529; as it was added to metal ores to lower their melting points for smelting, the Latin verb meaning 'flow' gave the mineral its name. Proposed as an element in 1810, fluorine proved difficult and dangerous to separate from its compounds, and several early experimenters died or sustained injuries from their attempts. Only in 1886 did French chemist Henri Moissan isolate elemental fluorine using low-temperature electrolysis, a process still employed for moder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
