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Guilford, Maryland
Guilford is an unincorporated community located in Howard County in the state of Maryland. The location is named after the Guilford Mill. Guilford is near Kings Contrivance, one of the nine "villages" of Columbia. For United States Census Bureau statistics, Guilford is split between the census-designated places of Savage and Columbia. History The area around Guilford was settled before it was called by the name of its mill. In 1711, the Log Chapel of Ease, now called Christ Church Guilford, was founded to the north of Guilford on a piece of land surveyed as "New Year's Gift" by Charles Carroll of Carrollton. The first full-time rector was James Magill, who lived at Athol. The church was listed on the National Register of Historic Places in 1978. Guilford Mill (later called Gary Mill) was situated on the northern branch of the Patuxent River, known as the Little Patuxent River. The mill may have been in operation as early as 1743, and one is documented to have been in op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unincorporated Area
An unincorporated area is a parcel of land that is not governed by a local general-purpose municipal corporation. (At p. 178.) They may be governed or serviced by an encompassing unit (such as a county) or another branch of the state (such as the military). There are many unincorporated communities and areas in the United States and Canada, but many countries do not use the concept of an unincorporated area. By country Argentina In Argentina, the provinces of Chubut Province, Chubut, Córdoba Province (Argentina), Córdoba, Entre Ríos Province, Entre Ríos, Formosa Province, Formosa, Neuquén Province, Neuquén, Río Negro Province, Río Negro, San Luis Province, San Luis, Santa Cruz Province, Argentina, Santa Cruz, Santiago del Estero Province, Santiago del Estero, Tierra del Fuego Province, Argentina, Tierra del Fuego, and Tucumán Province, Tucumán have areas that are outside any municipality or commune. Australia Unlike many other countries, Australia has only local go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savage, Maryland
Savage is an unincorporated area, unincorporated community and census-designated place located in Howard County, Maryland, Howard County, Maryland, United States, approximately south of Baltimore and north of Washington, D.C. It is situated close to the city of Laurel, Maryland, Laurel and to the planned community of Columbia, Maryland, Columbia. As of the 2010 United States census, 2020 census, it had a population of 7,542. The former mill town is a registered historic place, and has several original buildings preserved within and around the Savage Mill Historic District. History 17th century The lands of present-day Savage were first settled in approximately 1650. Colonel Henry Ridgley surveyed the land around Savage Mill and nearby Annapolis Junction, Maryland in 1685, naming the tract "Ridgely's Forrest". Joseph White was the grandson of Peregrine White, the first child born of the ''Mayflower'' expedition. 18th century In 1734, he opened a gristmill on land patented as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macadam
Macadam is a type of road construction pioneered by Scottish engineer John Loudon McAdam , in which crushed stone is placed in shallow, convex layers and compacted thoroughly. A binding layer of stone dust (crushed stone from the original material) may form; it may also, after rolling, be covered with a cement or bituminous binder to keep dust and stones together. The method simplified what had been considered state-of-the-art at that point. Predecessors Pierre-Marie-Jérôme Trésaguet Pierre-Marie-Jérôme Trésaguet is sometimes considered the first person to bring post-Roman science to road building. A Frenchman from an engineering family, he worked paving roads in Paris from 1757 to 1764. As chief engineer of road construction of Limoges, he had opportunity to develop a better and cheaper method of road construction. In 1775, Tresaguet became engineer-general and presented his answer for road improvement in France, which soon became standard practice there. Paperback ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guilford Quarry Pratt Through Truss Bridge
The Guilford Quarry Pratt Through Truss Bridge is a single-span, metal truss, railroad bridge in Guilford, Maryland. History The bridge was constructed in 1902 to extend a spur of the B&O railroad beyond Savage, Maryland upstream toward a quarry at Guilford Maryland. The town of Guilford at its peak comprised a mill, quarry, and a small village of stone structures. Guilford was noted for high quality granite for building structures. The "old Gault" Guilford quarries first started mining Guilford Quartz Monzonite in 1834. They were managed by the Guilford and Waltersville Granite Company in 1887 and later in 1889 by Matthew Gault & Son prior to the bridge installation on the Little Pautuxent river.Maryland Geological Survey Volume 2 1898, The Johns Hopkins Press, Baltimore. The river was unnavigable b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian National Postal Museum
The National Postal Museum, located in Washington, D.C., is the primary postal museum of the United States. It covers large portions of the postal history of the United States and other countries. It was established through joint agreement between the United States Postal Service and the Smithsonian Institution and opened in 1993. Premises The museum is located in the building that served as the main post office of Washington, D.C. for decades, from its construction in 1914 until 1986. The building was designed by the Graham and Burnham architectural firm, which was led by Ernest Graham following the death of Daniel Burnham in 1912. The headquarters of the United States Department of Labor's Bureau of Labor Statistics is based in this building, and there is also space for a data center for the United States Senate. It is located across the street from Washington Union Station. Displays The museum's atrium features vehicles used to deliver mail throughout the history of the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guilford Quartz Monzonite
The Guilford Quartz Monzonite is a Silurian or Ordovician quartz monzonite pluton in Howard County, Maryland. It is described as a biotite-muscovite-quartz monzonite which occurs as discontinuous lenticular bodies which intrude mainly through the Wissahickon Formation (gneiss). The extent of this intrusion was originally mapped in 1940Cloos, Ernst, and Broedel, C.H., 1940, Geologic map of Howard County and adjacent parts of Montgomery and Baltimore Counties (Maryland): Maryland Geological Survey County Geologic Map, 1 sheet, scale 1:62,500 as the "Guilford granite". It was given its current name in 1964 by C. A. Hopson.Hopson, C. A., 1964, The crystalline rocks of Howard and Montgomery Counties: Maryland Geological Survey County Report, 337 p., (Reprinted from Cloos, Ernst, and others, "Geology of Howard and Montgomery Counties," p. 27-215) Hopson grouped the Guilford Quartz Monzonite with the Ellicott City Granodiorite and the Woodstock Quartz Monzonite as "Late-kinem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarry
A quarry is a type of open-pit mining, open-pit mine in which dimension stone, rock (geology), rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact. The word ''quarry'' can also include the underground quarrying for stone, such as Bath stone. History For thousands of years, only hand tools had been used in quarries. In the eighteenth century, the use of drilling and blasting operations was mastered. Types of rock Types of rock extracted from quarries include: *Chalk *China clay *Scoria, Cinder *Clay *Coal *Construction aggregate (sand and gravel) *Coquina *Diabase *Gabbro *Granite *Gritstone *Gypsum *Limestone *Marble *Ores *Phosphate rock *Quartz *Sandstone *Slate *Travertine Methods of quarrying The method of removal of stones from their natural bed by using different operations is called quarryin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granite
Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dike (geology), dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or ''granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF diagram, QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) conta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gristmill
A gristmill (also: grist mill, corn mill, flour mill, feed mill or feedmill) grinds cereal grain into flour and Wheat middlings, middlings. The term can refer to either the grinding mechanism or the building that holds it. Grist is grain that has been separated from its chaff in preparation for mill (grinding), grinding. History Early history The Greek geographer Strabo reported in his ''Geography'' that a water-powered grain-mill existed near the palace of king Mithradates VI Eupator at Cabira, Asia Minor, before 71 BC. The early mills had horizontal paddle wheels, an arrangement which later became known as the "Norse wheel", as many were found in Scandinavia. The paddle wheel was attached to a shaft which was, in turn, attached to the centre of the millstone called the "runner stone". The turning force produced by the water on the paddles was transferred directly to the runner stone, causing it to grind against a stationary "Mill machinery#Watermill machinery, bed", a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finger Joint
A finger joint, also known as a comb joint, is a woodworking joint made by cutting a set of complementary, interlocking profiles in two pieces of wood, which are then Adhesive, glued. The cross-section of the joint resembles the interlocking of fingers between two hands, hence the name "finger joint". The sides of each profile increases the surface area for gluing, resulting in a strong bond, stronger than a butt joint but not very visually appealing. Finger joints are regularly confused with box joint, box joints, which are used for corners of boxes or box-like constructions. Creation Finger joints are generally created by using identical profiles for both pieces. They are made complementary by rotation or translation of the tool with respect to the workpiece. Typically a finger router bit is used, but spindle moulders can also be used. Manual cutting of finger joints is time-consuming and error prone hence rarely done except in craft pieces. Applications A tapered or scarf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Alexander Warfield
Charles Alexander Warfield (1751–1813) was a prominent United States, American in the Howard District of Anne Arundel County Maryland. He was president of the board of regents of the University of Maryland from 1812 to 1813. Early life Warfield was born in Anne Arundel County, Maryland, on December 3, 1751, and was the son of Azel Warfield and Sarah A Griffith He attended the University of Philadelphia without graduation. He was a leader of the Whig Club at the beginning of the American Revolution. His members wore hats inscribed "Liberty and Independence, or the Death in pursuit of it". On October 19, 1774, was one of the leaders that burned the ''Peggy Stewart (ship), Peggy Stewart'' in retaliation to sanctions on Americans following the Boston Tea Party. A painting of the incident resides in the State House at Annapolis and the Court House at Baltimore. In 1776 Warfield became the First Major of the Elk Ridge Battalion and began manufacturing Potassium nitrate, saltpetre. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patuxent River
The Patuxent River is a tributary of the Chesapeake Bay in the state of Maryland. There are three main river drainages for central Maryland: the Potomac River to the west passing through Washington, D.C., the Patapsco River to the northeast passing through Baltimore, and the Patuxent River between the two. The Patuxent drainage basin, watershed had a rapidly growing population of 590,769 in 2000. It is the largest and longest river entirely within Maryland, and its drainage basin, watershed is the largest completely within the state. Geography The river source, from the Chesapeake, is in the hills of the Maryland Piedmont (United States), Piedmont near the intersection of four counties – Howard County, Maryland, Howard, Frederick County, Maryland, Frederick, Montgomery County, Maryland, Montgomery and Carroll County, Maryland, Carroll, and only from Parr's Spring, the source of the south fork of the Patapsco River. Flowing in a generally southeastward direction, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
