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Ruggles Mine
Ruggles Mine is an open-pit mine that was turned into a tourist attraction but is now closed and was recently sold. The mine is located northwest of Concord, New Hampshire, in the town of Grafton, a short distance from Route 4 at the village green. The spacious pit includes tunnels and underground chambers, some of which are filled with water. Visitors were allowed to keep any of the various minerals that were found on the mine floor or that could be hammered loose from the walls of the pit. Geology The mineral deposits found in the area, known as the Littleton Formation, date from the Devonian period and have been estimated by geologists to be roughly 350 million to 400 million years old. Over 150 minerals have been discovered at the mine, mica being the most prevalent, but also including feldspar, beryl, amethyst, rose/smoky quartz, and garnet. Specimens of the rare uranium minerals, such as uranophane, torbernite, and autunite, have been found. History Sam Ruggles (3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grafton, New Hampshire
Grafton is a town in Grafton County, New Hampshire, United States. The population was 1,385 at the 2020 census. History Originally granted in 1761, and re-granted in 1769, Grafton, like the county it resides in, takes its name from Augustus FitzRoy, 3rd Duke of Grafton, a relative of colonial governor Benning Wentworth. Grafton was incorporated in 1778. Historically, Grafton's economic base consisted of subsistence farming, small-scale industry, and mining. Several mica mines and granite quarries once dotted the town's landscape, most notably Ruggles Mine. File:United Mica Company Mill, Grafton Center.jpg, The United Mica Company operated this mill between 1909 and 1916. Image File:Barney's Store, Grafton Village.jpg, In continuous operation since the 1840s, this store is now known as the Grafton Country Store. Image . Geography According to the United States Census Bureau, the town has a total area of , of which are land and are water, comprising 2.20% of the town. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autunite
Autunite (hydrated calcium uranyl phosphate), with formula Ca(UO2)2(PO4)2·10–12H2O, is a yellow-greenish fluorescent phosphate mineral with a hardness of 2–. Autunite crystallizes in the orthorhombic system and often occurs as tabular square crystals, commonly in small crusts or in fan-like masses. Due to the moderate uranium content of 48.27% it is radioactive and also used as uranium ore. Autunite fluoresces bright green to lime green under UV light. The mineral is also called calco-uranite, but this name is rarely used and effectively outdated. Autunite was discovered in 1852 near Autun, France, which is also autunite's namesake. It occurs as an oxidation product of uranium minerals in granite pegmatites and hydrothermal deposits. Associate minerals include metaautunite, torbernite, phosphuranylite, saleeite, uranophane and sabugalite. Etymology Autunite was named after the town of Autun, France, where the mineral was initially found. The mineral was named by Henry J. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Grafton County, New Hampshire
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – 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 division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ... [...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 non equivalent such formalizations, that are all called ''surface'', sometimes with some qualifier, such as algebraic surface, smooth surface or fractal surface. The concept of surface and its mathematical abstraction are both widely used in physics, engineering, computer graphics, and many other disciplines, primarily in representing the surfaces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourist Attractions In Grafton County, New Hampshire
Tourism is travel for pleasure or business; also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tours. The World Tourism Organization defines tourism more generally, in terms which go "beyond the common perception of tourism as being limited to holiday activity only", as people "travelling to and staying in places outside their usual environment for not more than one consecutive year for leisure and not less than 24 hours, business and other purposes". Tourism can be domestic (within the traveller's own country) or international, and international tourism has both incoming and outgoing implications on a country's balance of payments. Tourism numbers declined as a result of a strong economic slowdown (the late-2000s recession) between the second half of 2008 and the end of 2009, and in consequence of the outbreak of the 2009 H1N1 influenza virus, but slowly recovered until the COVID-19 pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of New Hampshire
The geology of New Hampshire is similar to that of the rest of New England in comprising a series of metamorphosed sedimentary and volcanic rocks of Late Proterozoic to Devonian age, intruded by many plutons and dikes ranging in age from Late Proterozoic to early Cretaceous. New Hampshire is known as "the Granite State", but less than half is underlain by granite; much of it is schist or gneiss, both of which are metamorphic rocks. Geological structure The state straddles three composite tectonostratigraphic terranes. The larger part of the state lies on the Central Maine composite terrane, comprising the Central Maine trough in the east and the Bronson Hill mantled gneiss domes in the west. A small area of the first composite terrane belongs to the Hurricane Mountain belt and olistostrome belt. The northernmost corner of the state lies in the Connecticut Valley trough of the Boundary Mountains composite terrane. In the coastal region in the southeast is the Merrimack–Orringt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruggles Mine-02 '' and its sequels
{{disambig, geo ...
Ruggles may refer to: Places * Ruggles, Ohio, an unincorporated community * Ruggles Island, in the Falkland Islands * Ruggles River, Nunavut, Canada * Ruggles Township, Ashland County, Ohio, USA Other uses * Ruggles (surname) * Ruggles station, an MBTA train, bus and subway station * Ruggles of Red Gap (other) * Ruggles Mine, an open-pit pegmatite tourist mine, in Grafton, New Hampshire, United States * Ruggles Prize, for excellence in Mathematics * '' The Ruggles'', an early American television sitcom (1949–52) * The surname of the main characters in the book ''The Family from One End Street ''The Family from One End Street'' is a Realism (arts), realistic English children's novel, written and illustrated by Eve Garnett and published by Frederick Muller in 1937. It is "a classic story of life in a big, happy family." set in a small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toaster
A toaster is a small electric appliance that uses radiant heat to brown sliced bread into toast. Types Pop-up toaster In pop-up or automatic toasters, a single vertical piece of bread is dropped into a slot on the top of the toaster. A lever on the side of the toaster is pressed down, lowering the bread into the toaster and activating the heating elements. The length of the toasting cycle (and therefore the degree of toasting) is adjustable via a lever, knob, or series of pushbuttons, and when an internal device determines that the toasting cycle is complete, the toaster turns off and the toast pops up out of the slots. The completion of toasting may be determined by a timer or by a thermal sensor, such as a bimetallic strip, located close to the toast. Toasters may also be used to toast other foods such as teacakes, toaster pastry, potato waffles and crumpets, though the resultant accumulation of fat and sugar inside the toaster can contribute to its eventual failur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Insulators
An electrical insulator is a material in which electric current does not flow freely. The atoms of the insulator have tightly bound electrons which cannot readily move. Other materials—semiconductors and conductors—conduct electric current more easily. The property that distinguishes an insulator is its resistivity; insulators have higher resistivity than semiconductors or conductors. The most common examples are non-metals. A perfect insulator does not exist because even insulators contain small numbers of mobile charges (charge carriers) which can carry current. In addition, all insulators become electrically conductive when a sufficiently large voltage is applied that the electric field tears electrons away from the atoms. This is known as the breakdown voltage of an insulator. Some materials such as glass, paper and PTFE, which have high resistivity, are very good electrical insulators. A much larger class of materials, even though they may have lower bulk resistivity, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitumen
Asphalt, also known as bitumen (, ), is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used. Full text at Internet Archive (archive.org) The word is derived from the Ancient Greek ἄσφαλτος ''ásphaltos''. The largest natural deposit of asphalt in the world, estimated to contain 10 million tons, is the Pitch Lake located in La Brea in southwest Trinidad (Antilles island located on the northeastern coast of Venezuela), within the Siparia Regional Corporation. The primary use (70%) of asphalt is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other main uses are for bituminous waterproofing products, including production of roofing felt and for sealing flat roofs. In material sciences and engineering, the terms "asphalt" an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cement Block
A concrete masonry unit (CMU) is a standard-size rectangular block used in building construction. CMUs are some of the most versatile building products available because of the wide variety of appearances that can be achieved using them. Those that use cinders (fly ash or bottom ash) as an aggregate material are called cinder blocks in the United States, breeze blocks (''breeze'' is a synonym of ''ash'') in the United Kingdom, and hollow blocks in the Philippines. In New Zealand and Canada they are known as concrete blocks (a name common in the United States also). In New Zealand, they are also called construction blocks. In Australia, they are known as Besser blocks or Besser bricks, because the Besser Company was a major supplier of machines that made concrete blocks. Clinker blocks use clinker as aggregate. In non-technical usage, the terms ''cinder block'' and ''breeze block'' are often generalized to cover all of these varieties. Composition Concrete blocks are made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmetics
Cosmetics are constituted mixtures of chemical compounds derived from either natural sources, or synthetically created ones. Cosmetics have various purposes. Those designed for personal care and skin care can be used to cleanse or protect the body or skin. Cosmetics designed to enhance or alter one's appearance (makeup) can be used to conceal blemishes, enhance one's natural features (such as the eyebrows and eyelashes), add color to a person's face, or change the appearance of the face entirely to resemble a different person, creature or object. Cosmetics can also be designed to add fragrance to the body. Definition and etymology The word ''cosmetics'' derives from the Greek (), meaning "technique of dress and ornament", from (), "skilled in ordering or arranging" and that from (), meaning "order" and "ornament". Cosmetics are constituted from a mixture of chemical compounds derived from either natural sources, or synthetically created ones. Legal definition T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
