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Liberty Tunnel
The Liberty Tunnels (also known as the Liberty Tubes) are a pair of tunnels located in Pittsburgh, Pennsylvania, United States that allow motorists to travel between the South Hills of Pittsburgh and the city, beneath Mt. Washington. The tunnels were vital in the expansion of the South Hills suburbs by providing a direct route to the city, eliminating the time-consuming task of navigating around or over Mt. Washington and its inclines. Opening in 1924, the Liberty Tunnels are the longest automobile tunnel in the City of Pittsburgh. Design The tunnels were designed by Amos D. Neeld, who would also supervise the construction of the adjoining Liberty Bridge, which gives travelers a way to cross the Monongahela River after passing through the tunnels. The design was two vertical wall horseshoe profile tunnels, each consisting of two lanes of traffic and a sidewalk. The sidewalks, being minimally used and in disrepair, were removed during a renovation in the 1970s in order to w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Washington, Pittsburgh (mountain)
Mount Washington is a hill in Pittsburgh, on the southern banks of the Monongahela River and Ohio River. History In the early history of Pittsburgh, Mount Washington was known as Coal Hill, but Coal Hill was actually on the south bank of the Monongahela River. Easy access to the Pittsburgh coal seam's outcrop near the base of Mount Washington allowed several mines to operate there. Also, rock was quarried from the hill. Gray sandstone, for example, was quarried at Coal Hill for the second Allegheny County Courthouse. By 1876, the name had been changed to Mount Washington, and a year later, the view of the City of Pittsburgh was first drawn from Mount Washington. Many photos of the Pittsburgh skyline are from Mount Washington, due to the elevation of the hill overlooking the river valley and Downtown Pittsburgh below. Inclines The original switchback trails that wound up the steep slopes of Mount Washington were barely passable to a team of horses pulling a loaded wagon. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saw Mill Run
Saw Mill Run is a tributary of the Ohio River in Pennsylvania. It is an urban stream, and lies entirely within Allegheny County, Pennsylvania. The stream enters the Ohio just downstream from the Forks of the Ohio in Pittsburgh, at a place that was founded as the town of Temperanceville in the 1830s. It provides an entry through the elevated plateau south of Pittsburgh known as the South Hills, and land transportation has paralleled the stream since the nineteenth century. The stream is named for an actual saw mill that operated near the mouth of the stream where it empties into the Ohio River. The first reference to the mill is in relation to the construction of Fort Pitt (1759–1761). The mill provided much of the lumber used in the construction of the new Fort, after the British claimed the area from the French and destroyed Fort Duquesne. Railroads The Coal Hill Coal Railroad crossed the stream on a trestle, and extended upstream in 1861. This railroad was purchased by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnels Completed In 1924
A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment. Secret tunnels are built for military purposes, or by civilians for smuggling of weapons, contraband, or people. Special tunnels, such as wildlife crossings, are built to allow wildlife to cross human-made barriers safely. Tunne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Road Tunnels In Pennsylvania
A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation. There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, thoroughfares, and local roads. The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths. Definitions Historically many roads were simply recognizable routes without any formal construction or some maintenance. The Organization for Economic Co-operation and Development (OECD) defines a road as "a line of communication (travelled way) using a stabilized base other than rails or air strips open to public traffic, primarily for the use of road motor vehicles running on their own wheels", which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsburgh History & Landmarks Foundation Historic Landmarks
Pittsburgh ( ) is a city in the Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the second-most populous city in Pennsylvania behind Philadelphia, and the 68th-largest city in the U.S. with a population of 302,971 as of the 2020 census. The city anchors the Pittsburgh metropolitan area of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 27th-largest in the U.S. It is the principal city of the greater Pittsburgh–New Castle–Weirton combined statistical area that extends into Ohio and West Virginia. Pittsburgh is located in southwest Pennsylvania at the confluence of the Allegheny River and the Monongahela River, which combine to form the Ohio River. Pittsburgh is known both as "the Steel City" for its more than 300 steel-related businesses and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Los Angeles Times
The ''Los Angeles Times'' (abbreviated as ''LA Times'') is a daily newspaper that started publishing in Los Angeles in 1881. Based in the LA-adjacent suburb of El Segundo since 2018, it is the sixth-largest newspaper by circulation in the United States. The publication has won more than 40 Pulitzer Prizes. It is owned by Patrick Soon-Shiong and published by the Times Mirror Company. The newspaper’s coverage emphasizes California and especially Southern California stories. In the 19th century, the paper developed a reputation for civic boosterism and opposition to labor unions, the latter of which led to the bombing of its headquarters in 1910. The paper's profile grew substantially in the 1960s under publisher Otis Chandler, who adopted a more national focus. In recent decades the paper's readership has declined, and it has been beset by a series of ownership changes, staff reductions, and other controversies. In January 2018, the paper's staff voted to unionize and final ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liberty Tunnel 1974
Liberty is the ability to do as one pleases, or a right or immunity enjoyed by prescription or by grant (i.e. privilege). It is a synonym for the word freedom. In modern politics, liberty is understood as the state of being free within society from control or oppressive restrictions imposed by authority on one's way of life, behavior, or political views. In theology, liberty is freedom from the effects of "sin, spiritual servitude, rworldly ties". Sometimes liberty is differentiated from freedom by using the word "freedom" primarily, if not exclusively, to mean the ability to do as one wills and what one has the power to do; and using the word "liberty" to mean the absence of arbitrary restraints, taking into account the rights of all involved. In this sense, the exercise of liberty is subject to capability and limited by the rights of others. Thus liberty entails the responsible use of freedom under the rule of law without depriving anyone else of their freedom. Liberty can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Bureau Of Mines
For most of the 20th century, the United States Bureau of Mines (USBM) was the primary United States government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources. The Bureau was abolished in 1996. Summary USBM was established in the Department of the Interior on May 16, 1910, pursuant to the Organic Act (Public Law 179), to deal with a wave of catastrophic mine disasters. The Bureau's mission was gradually expanded to include: * The conduct of research to enhance the safety, health, and environmental impact of mining and processing of minerals and materials. * The collection, analysis, and dissemination of information about mining and processing of more than 100 mineral commodities across the Nation and in more than 185 countries around the world. * Analysis of the impact of proposed mineral-related laws and regulations upon the national interest. * Production, conservation, sale, and di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventilation Plant, Liberty Tunnels, 2022-07-15, 03
Ventilation may refer to: * Ventilation (physiology), the movement of air between the environment and the lungs via inhalation and exhalation ** Mechanical ventilation, in medicine, using artificial methods to assist breathing *** Ventilator, a machine designed to move breathable air into and out of the lungs * Ventilation (architecture), the process of "changing" or replacing air in any space to provide high indoor air quality * Ventilation (firefighting), the expulsion of heat and smoke from a fire building * Ventilation (mining), flow of air to the underground workings of a mine of sufficient volume to dilute and remove noxious gases See also * Heating, ventilation, and air conditioning, the technology of indoor and vehicular environmental comfort * Mechanical fan * Reebok Ventilator, a shoe * Vent (other) * Ventilator (other) A ventilator, in medical terminology, is a machine designed to provide mechanical ventilation by moving breathable air into and out o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Booth And Flinn
Booth and Flinn (1876—1950) was one of the largest American general contracting companies of its era. It was established and headquartered in Pittsburgh, Pennsylvania, United States. History The company was founded by William Flinn (1851—1924) as a sole proprietorship in 1876 and merged with a similar venture in 1881 directed by James J. Booth. The business later operated under the name of Booth and Flinn, Ltd. and finally as Booth and Flinn Company. The firm's origins were entwined with the Republican Party machine of the political bosses Flinn and Christopher Magee (1848—1901), his partner in politics, that controlled the city of Pittsburgh for the final twenty years of the 19th century. As a result of politics and a "lowest responsible bidder" scheme, Booth and Flinn won most large construction and paving contracts in Pittsburgh and Western Pennsylvania, where they built streets, trolley lines, and bridges, usually amid charges by competitors of graft. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dormont, Pennsylvania
Dormont is a borough in Allegheny County, Pennsylvania, United States and is part of the Pittsburgh Metro Area. The population was 8,593 at the 2010 census. Dormont includes young professionals, working families, and retirees. Dormont is mixed use and urban and features a pedestrian friendly business district, with bars, coffee shops, restaurants, and retail stores. It is famous for one of the largest municipal pools in Pennsylvania, the historic Dormont Pool. Loosely translated, Dormont means "Mountain of Gold" in French. History The territory in which Dormont Borough is situated was held by the Delaware and Shawnee tribes until 1768 when the territory was part of the transaction in which Fort Stanwix was purchased from the Six Nations. In following years, Dormont's area was part of Cumberland County, Pitt Township in Bedford County, Penn Township in Washington County, and finally, St. Clair Township in Allegheny County in 1788. Dormont was originally fashioned from pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pittsburgh
Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Western Pennsylvania, the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania behind Philadelphia, and the List of United States cities by population, 68th-largest city in the U.S. with a population of 302,971 as of the 2020 United States census, 2020 census. The city anchors the Pittsburgh metropolitan area of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the Pennsylvania metropolitan areas, second-largest in Pennsylvania, and the List of metropolitan statistical areas, 27th-largest in the U.S. It is the principal city of the greater Pittsburgh–New Castle–Weirton combined statistical area that extends into Ohio and West Virginia. Pitts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
