|
Centralia Coal Mine
Centralia Coal Mine was an open-pit coal mine, owned by the Canadian-based TransAlta Corporation. The mine shut down in 2006. Also referred to as the TransAlta Centralia Mining (TCM) operation, the coal mine was located approximately northeast of the city of Centralia, in Lewis County, in the US state of Washington. Together with Centralia Power Plant, it was bought in May 2000 by TransAlta for $554 million – $101 million for the mine and $453 million for the power plant. History The Centralia Coal Mine was Washington state's largest coal mine. The mined coal was supplied exclusively to the adjacent coal-fired Centralia Power Plant, which is operated by TransAlta Centralia Generation LLC, and the coal mine was operated by TransAlta Centralia Mining. Prior to May 2000, the mine was owned and operated by PacifiCorp. Production The Centralia Mine completed its 31st year of production in 2001, producing of sub-bituminous coal, more than it produced in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TransAlta Dragline
TransAlta Corporation (formerly Calgary Power Company, Ltd.) is an electricity power generator and wholesale marketing company headquartered in Calgary, Alberta, Canada. It is a privately owned corporation and its shares are traded publicly. It operates 76 power plants in Canada, the United States, and Australia. TransAlta operates wind, hydro, natural gas, and coal power generation facilities. The company has been recognized for its leadership in sustainability by the Dow Jones Sustainability North America Index, the FTSE4Good Index, and the Jantzi Social Index. TransAlta is Canada's largest investor-owned renewable energy provider. TransAlta operated Canada's largest surface strip coal mine from 1970 until 2021 through its subsidiary company Sunhills Mining. The 12,600-hectare mine produced 13 million tonnes of thermal grade coal a year. The company announced that it would decommission the Highvale mine by 2021. On November 2, 2023, it was announced that TransAlta bought Heartl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary Rock
Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or deposited at Earth's surface. Sedimentation is any process that causes these particles to settle in place. Geological detritus originates from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or Mass wasting, mass movement, which are called agents of denudation. Biological detritus is formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur when dissolved minerals precipitate from aqueous solution, water solution. The sedimentary rock cover of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Mines In The United States
A surface, as the term is most generally used, is the outermost or uppermost layer of a physical object or space. It is the portion or region of the object that can first be perceived by an observer using the senses of sight and touch, and is the portion with which other materials first interact. The surface of an object is more than "a mere geometric solid", but is "filled with, spread over by, or suffused with perceivable qualities such as color and warmth". The concept of surface has been abstracted and formalized in mathematics, specifically in geometry. Depending on the properties on which the emphasis is given, there are several inequivalent such formalizations that are all called ''surface'', sometimes with a qualifier such as algebraic surface, smooth surface or fractal surface. The concept of surface and its mathematical abstractions are both widely used in physics, engineering, computer graphics, and many other disciplines, primarily in representing the surfaces of ph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Lewis County, Washington
A building or edifice is an enclosed structure with a roof, walls and windows, usually standing permanently in one place, such as a house or factory. Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for numerous factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the concept, see ''Nonbuilding structure'' for contrast. Buildings serve several societal needs – occupancy, primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical separation of the human habitat (a place of comfort and safety) from the ''outside'' (a place that may be harsh and harmful at times). buildings have been objects or canvasses of much artistic expression. In recent years, interest in sustainable planning and building practi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Washington (state)
The geology of the Pacific Northwest includes the composition (including rock, minerals, and soils), structure, physical properties and the processes that shape the Pacific Northwest region of North America. The region is part of the Ring of Fire: the subduction of the Pacific and Farallon Plates under the North American Plate is responsible for many of the area's scenic features as well as some of its hazards, such as volcanoes, earthquakes, and landslides. The geology of the Pacific Northwest is vast and complex. Most of the region began forming about 200 million years ago as the North American Plate started to drift westward during the rifting of Pangaea. Since that date, the western edge of North America has grown westward as a succession of island arcs and assorted ocean-floor rocks have been added along the continental margin. There are at least five geologic provinces in the area: the Cascade Volcanoes, the Columbia Plateau, the North Cascades, the Coast Mountains, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Mines In The United States
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is a type of fossil fuel, formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of the Earth's tropical land areas during the late Carboniferous (Pennsylvanian (geology), Pennsylvanian) and Permian times. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution. With the invention of the steam engine, coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over a third of its Electricity generation, electricity. Some iron and steel-maki ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tono, Washington
Tono is a ghost town in southwest Washington in the United States. It was a company-owned mining town founded in 1907 by the Washington Union Coal Company, a subsidiary of the Union Pacific Railroad to supply coal for their steam locomotives. Tono was located in southern Thurston County about south of Olympia, Washington, south of Tenino, east of the town of Bucoda, at the end of a railroad spur. History The town was named Tono in 1909 by one of the many Japanese railroad workers. Folk etymology states the name is a contraction of "ton of coal". As the region was primarily coal mining, Tono was served by a post office under the moniker, Coal Bank. At its peak in the 1920s Tono had over 1,000 residents, 125 houses, a hotel, a hospital, a general store, and a school. The town flourished until 1932 when the railroads began switching to diesel locomotives; the Union Pacific then sold the mines to the Bucoda Mining Company. Afterwards the mines operated intermitt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Chronicle (Centralia, Washington)
''The Chronicle'', formerly the ''Daily Chronicle'', is a local newspaper in Centralia, Washington, US. Its newsroom covers happenings in all of Lewis County and parts of neighboring Thurston, Cowlitz, Grays Harbor, Pierce, Pacific, Wahkiakum and Yakima counties. The newspaper is owned by CT Publishing and publishes three print editions per week and daily online, where it maintains the "Daily Chronicle" moniker. The Chronicle shares local, statewide and regional news, wire stories and sports, including high school sports out of 17 nearby school districts. History ''The Weekly Chronicle'' was founded in July 1889 by Thomas Scammons and J. E. Whinnery. It switched to daily publication the following year, renaming itself ''The Daily Chronicle''. ''The Chronicle'' was purchased by Jeraldine and Richard Lafromboise in 1968. Richard died months after the sale and Jeraldine, known as "Jeri", oversaw operations until 2012. In 2011, ''The Chronicle'' switched to publishing three edit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Seattle Times
''The Seattle Times'' is an American daily newspaper based in Seattle, Washington. Founded in 1891, ''The Seattle Times'' has the largest circulation of any newspaper in the state of Washington and the Pacific Northwest region. The Seattle Times Company, which owns and publishes the paper, is mostly owned by the Blethen family, which holds 50.5% of the company; the other 49.5% is owned by the McClatchy Company. The Blethen family has owned and operated the newspaper since 1896. ''The Seattle Times'' had a longstanding rivalry with the '' Seattle Post-Intelligencer'' until the latter ceased print publication in 2009. ''The Seattle Times'' has received 11 Pulitzer Prizes and is widely renowned for its investigative journalism. History ''The Seattle Times'' originated as the ''Seattle Press-Times'', a four-page newspaper founded in 1891 with a daily circulation of 3,500, which Maine teacher and attorney Alden J. Blethen bought in 1896. Renamed the ''Seattle Daily Times'', it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Reclamation
Land reclamation, often known as reclamation, and also known as land fill (not to be confused with a waste landfill), is the process of creating new Terrestrial ecoregion, land from oceans, list of seas, seas, Stream bed, riverbeds or lake beds. The land reclaimed is known as reclamation ground, reclaimed land, or land fill. History In ancient Egypt, the rulers of the Twelfth Dynasty of Egypt, Twelfth Dynasty (c. 2000–1800 BC) undertook a far-sighted land reclamation scheme to increase agricultural output. They constructed levees and canals to connect the Faiyum Oasis, Faiyum with the Bahr Yussef waterway, diverting water that would have flowed into Lake Moeris and causing gradual evaporation around the lake's edges, creating new farmland from the reclaimed land. A similar land reclamation system using dams and drainage canals was used in the Greek Lake Copais, Copaic Basin during the Middle Helladic period, Middle Helladic Period (c. 1900–1600 BC). Another early large-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powder River Basin
The Powder River Basin is a geologic structural basin in southeast Montana and northeast Wyoming, about east to west and north to south, known for its extensive coal reserves. The former hunting grounds of the Oglala Lakota, the area is very sparsely populated and is known for its rolling grasslands and semiarid climate. The basin is both a topographic drainage and geologic structural basin, drained by the Powder River, after which it is named, Cheyenne River, Tongue River, Bighorn River, Little Missouri River, Platte River, and their tributaries. The major cities in the area include Gillette and Sheridan, Wyoming and Hardin, Montana. In 2007, the region produced 436 million short tons (396 million tonnes) of coal, more than twice the production of second-place West Virginia, and more than the entire Appalachian region. The Powder River Basin is the largest coal-producing region in the United States. The region includes the Black Thunder Coal Mine, the most product ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puget Group
The Puget Group is a Group (geology), geologic group in Washington (state). It preserves fossils dating back to the Paleogene Period (geology), period. In the northern area of group around Renton, Washington, the Group has been divided into three formation (geology), formations (from oldest to youngest), the Tiger Mountain Formation, the Tukwila Formation, and Renton Formation. Robin Burnham (1994) specifies that these formations have not been defined and extended to Puget Group outcrops to the south within the Green River (Duwamish River tributary), Green River gorge and all of the Tukwila formation rocks are missing. The Puget Group has been mapped across a total of six western Washington Quadrangle (geography), geographic quadrangles. Age The total deposition time has been estimated to be as short as approximately 7.7 million years, from around based on isotopic data reported in 1993 or as long as based on the paleofloristic data of Wolfe (1968, 1977) Western North Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
