|
Mulberry Downs Quarry
Mulberry Downs Quarry is a disused opencast tin mine in Cornwall, England, UK. Today the site is described as a 'chasm' being a steep or sheer-sided pit long and up to deep, and the quarry and immediate surroundings are heavily wooded. The quarry was designated as a Site of Special Scientific Interest (SSSI) in 1973 for its geological interest. History The mine, known as Mulberry Hill Mine and locally just as Mulberry Mine has been producing tin since Roman times. The tin deposit itself has been described as "best example of a stockwork tin ore deposit in Britain" The mine was part of the Lanhydrock estate, and there was sporadic mining between 1859 and 1916other sources give the year of closure as 1912 with a total of of tin being produced in this period. Although the mine is opencast, two level/adits were driven to the base of the quarry, however the current depth of the workings is consistent with the water table measured at nearby boreholes and as there is not any rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-pit Mining
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique that extracts rock (geology), rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin. In contrast, deeper mineral deposits can be reached using underground mining. Open-pit mining is considered one of the most dangerous industrial sector, sectors in the industrial world. It causes significant effects to miners' health, as well as damage to the ecological land and water. Open-pit mining causes changes to vegetation, soil, and bedrock, which ultimately contributes to changes in surface hydrology, groundwater levels, and flow paths. Additionally, open-pit produces harmful pollutants depending on the type of mineral being mined, and the type of mining process being used. Extraction Miners typically drill a series of test holes to locate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bronze
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloids (such as arsenic or silicon). These additions produce a range of alloys some of which are harder than copper alone or have other useful properties, such as strength, ductility, or machinability. The archaeological period during which bronze was the hardest metal in widespread use is known as the Bronze Age. The beginning of the Bronze Age in western Eurasia is conventionally dated to the mid-4th millennium BCE (~3500 BCE), and to the early 2nd millennium BCE in China; elsewhere it gradually spread across regions. The Bronze Age was followed by the Iron Age, which started about 1300 BCE and reaching most of Eurasia by about 500 BCE, although bronze continued to be much more widely used than it is in modern times. Because historica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-renewable Resource Companies Established In 1859
A non-renewable resource (also called a finite resource) is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption. An example is carbon-based fossil fuels. The original organic matter, with the aid of heat and pressure, becomes a fuel such as oil or gas. Earth minerals and metal ores, fossil fuels (coal, petroleum, natural gas) and groundwater in certain aquifers are all considered non-renewable resources, though individual elements are always conserved (except in nuclear reactions, nuclear decay or atmospheric escape). Conversely, resources such as timber (when harvested sustainably) and wind (used to power energy conversion systems) are considered renewable resources, largely because their localized replenishment can also occur within human lifespans. Earth minerals and metal ores Earth minerals and metal ores are examples of non-renewable resources. The metals themselves are present in vast amounts in Ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1859 Establishments In The United Kingdom
Events January–March * January 21 – José Mariano Salas (1797–1867) becomes Conservative interim President of Mexico. * January 24 ( O. S.) – Under the rule of Alexandru Ioan Cuza, the provinces of Wallachia and Moldavia are united under the jurisdiction of the Ottoman Empire. It would be a principal step in forming the modern state of Romania. * January 28 – The city of Olympia is incorporated in the Washington Territory of the United States of America. * February 2 – Miguel Miramón (1832–1867) becomes Conservative interim President of Mexico. * February 4 – German scholar Constantin von Tischendorf rediscovers the ''Codex Sinaiticus'', a 4th-century uncial manuscript of the Greek Bible, in Saint Catherine's Monastery on the foot of Mount Sinai, in the Khedivate of Egypt and arranges for its presentation to his patron, Tsar Alexander II of Russia at Saint Petersburg. * February 14 – Oregon is admitted as the 33rd U.S. state. * February 12 – The Mek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sites Of Special Scientific Interest Notified In 1973
Site most often refers to: * Archaeological site * Campsite, a place used for overnight stay in an outdoor area * Construction site * Location, a point or an area on the Earth's surface or elsewhere * Website, a set of related web pages, typically with a common domain name It may also refer to: * Site, a National Register of Historic Places property type * SITE (originally known as ''Sculpture in the Environment''), an American architecture and design firm * Site (mathematics), a category C together with a Grothendieck topology on C * ''The Site'', a 1990s TV series that aired on MSNBC * SITE Intelligence Group, a for-profit organization tracking jihadist and white supremacist organizations * SITE Institute, a terrorism-tracking organization, precursor to the SITE Intelligence Group * Sindh Industrial and Trading Estate, a company in Sindh, Pakistan * SITE Centers, American commercial real estate company * SITE Town, a densely populated town in Karachi, Pakistan * S.I.T.E Indust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sites Of Special Scientific Interest In Cornwall
Site most often refers to: * Archaeological site * Campsite, a place used for overnight stay in an outdoor area * Construction site * Location, a point or an area on the Earth's surface or elsewhere * Website, a set of related web pages, typically with a common domain name It may also refer to: * Site, a National Register of Historic Places property type * SITE (originally known as ''Sculpture in the Environment''), an American architecture and design firm * Site (mathematics), a category C together with a Grothendieck topology on C * ''The Site'', a 1990s TV series that aired on MSNBC * SITE Intelligence Group, a for-profit organization tracking jihadist and white supremacist organizations * SITE Institute, a terrorism-tracking organization, precursor to the SITE Intelligence Group * Sindh Industrial and Trading Estate, a company in Sindh, Pakistan * SITE Centers, American commercial real estate company * SITE Town, a densely populated town in Karachi, Pakistan * S.I.T.E Indus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarries In Cornwall
A quarry is a type of open-pit mine in which dimension stone, 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 *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 quarrying. Methods of quarrying include: *a) Dig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mines In Cornwall
Mine, mines, miners or mining may refer to: Extraction or digging *Miner, a person engaged in mining or digging *Mining, extraction of mineral resources from the ground through a mine Grammar *Mine, a first-person English possessive pronoun Military * Mining (military), digging under a fortified military position to penetrate its defenses * Mine warfare ** Anti-tank mine, a land mine made for use against armored vehicles ** Antipersonnel mine, a land mine targeting people walking around, either with explosives or poison gas ** Bangalore mine, colloquial name for the Bangalore torpedo, a man-portable explosive device for clearing a path through wire obstacles and land mines ** Cluster bomb, an aerial bomb which releases many small submunitions, which often act as mines ** Land mine, explosive mines placed under or on the ground ** Naval mine, or sea mine, a mine at sea, either floating or on the sea bed, often dropped via parachute from aircraft, or otherwise lain by surface sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lanivet
Lanivet () is a village and civil parish in Cornwall, England, United Kingdom. The village is situated approximately southwest of Bodmin, and before the Bodmin by-pass was built, the A30 road between London and Land's End passed through the village. The Saints' Way long-distance footpath passes Lanivet near its half-way point. The parish includes the hamlets of Bodwanick, Bokiddick, Lamorick, St Ingunger, Trebell, Tregullon, Tremore, and Woodly. Part of St Lawrence, Cornwall, St Lawrence is also in this parish. An electoral ward of the same name surrounds Bodmin. Its population at the 2011 census was 4,241. Notable buildings and antiquities The church tower is built in the Perpendicular style and in 1878 had six bells. Renovations to the porch, nave and aisles were completed in that year along with the extension of the burial ground by enclosing an adjacent field. Within the church are monuments of the Courtenays of Tremere. In the churchyard are two ancient stone crosses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruthernbridge
Ruthernbridge () is a village in the parish of Withiel in Cornwall, England, UK. History The village is centred around an early 15th-century bridge with two pointed arches which carries the road over the River Ruthern. The old wesleyan chapel, which was built in 1879, and the adjacent coach house, are both Grade 2 listed buildings. Railway When the Bodmin and Wadebridge Railway (B&W) was built in 1834 it included a short branch of about from Grogley Junction to Ruthernbridge. Although not a requirement, the B&W placed stone markers every quarter of a mile, and a marker stone at each terminus showing the distance to the company's headquarters in Wadebridge, that at Ruthernbridge showing a distance of 4 miles 1 furlong 5 chains 10 yards. The main use of the line was to carry sand to local farms for use as a soil improver while ores of Lead, Iron and Copper from Mulberry Mine and Iron from Blackhay Mine were taken out. Although there was never an official passenger service on th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bodmin And Wadebridge Railway
The Bodmin and Wadebridge Railway was a railway line opened in 1834 in Cornwall, England, United Kingdom. It linked the quays at Wadebridge with the town of Bodmin and also to quarries at Wenfordbridge.Sources use Wenfordbridge and Wenford Bridge interchangeably, but the current Ordnance Survey 1:50 000 maps cite the name as a single word Its intended traffic was minerals to the port at Wadebridge and sea sand, used to improve agricultural land, inwards. Passengers were also carried on part of the line. It was the first steam-powered railway line in the county and predated the main line to London by 25 years. It was always desperately short of money, both for initial construction and for actual operation. In 1847 it was purchased by the London and South Western Railway,Christopher Awdry, ''Encyclopaedia of British Railway Companies'', Patrick Stephens Limited, Wellingborough, 1990, when that company hoped to gain early access to Cornwall for its network, but in fact those inten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Age
The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progressing to protohistory (before written history). In this usage, it is preceded by the Stone Age (subdivided into the Paleolithic, Mesolithic and Neolithic) and Bronze Age. These concepts originated for describing Iron Age Europe and the ancient Near East. In the archaeology of the Americas, a five-period system is conventionally used instead; indigenous cultures there did not develop an iron economy in the pre-Columbian era, though some did work copper and bronze. Indigenous metalworking arrived in Australia with European contact. Although meteoric iron has been used for millennia in many regions, the beginning of the Iron Age is defined locally around the world by archaeological convention when the production of Smelting, smelted iron (espe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
