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Sand Mining In Tamil Nadu
Sand mining, especially illegal sand mining in Tamil Nadu state is done on river beds, basins and beaches, It has been on an increase, since the beginning of the 1990s following a boom in the construction industry. Palar River basin, Vaigai River basin, Cauvery River basin (including its tributaries) and Thamirabarani River basin are some of the most affected regions. Illegal quarrying is happening in these areas in broad daylight. Though as per Tamil Nadu Public Works Department, 5,500-6,000 truck loads of 200 cubic ft. of sand is mined each day, in reality this figure is estimated to be around 55,000 truckloads of 400 cubic ft. of sand per day. In 2013, illegal sand mining in the state was estimated to be worth . This also results in the state exchequer losing over in revenue. History River sand mining began in the state as a small scale unorganised activity in the 1980s. It quickly began to boom in late 1980s and the beginning of the 1990s owing to a boom in real estate and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sand Theft
Sand theft or unauthorised or illegal sand mining leads to a widely unknown global example of natural and non-renewable resource depletion problem comparable in extent to global water scarcity. Beach theft is illegal removal of large quantities of sand from a beach leading to full or partial disappearance of the beach. In India illegal sand mining is the country's largest organized criminal activity. Sand and beach theft by country Sand theft is a worldwide phenomenon. Beach theft, the large-scale removal of sand to the point that entire stretches of a beach disappear, is considerably less common. Two instances of beach thefts have been widely reported in the media: one in Hungary in 2007 and another in Jamaica in 2008. The beach that was stolen in Hungary was an artificially created one on the banks of a river. The other one is a genuine example of a beach theft. China Too much sand was taken from the Yangtze River to help build Shanghai in the 1980s and 1990s, prompting th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sillimanite
Sillimanite is an aluminosilicate mineral with the chemical formula Al2SiO5. Sillimanite is named after the American chemist Benjamin Silliman (1779–1864). It was first described in 1824 for an occurrence in Chester, Connecticut. Occurrence Sillimanite is one of three aluminosilicate polymorphs, the other two being andalusite and kyanite. A common variety of sillimanite is known as ''fibrolite'', so named because the mineral appears like a bunch of fibres twisted together when viewed in thin section or even by the naked eye. Both the fibrous and traditional forms of sillimanite are common in metamorphosed sedimentary rocks. It is an index mineral indicating high temperature but variable pressure. Example rocks include gneiss and granulite. It occurs with andalusite, kyanite, potassium feldspar, almandine, cordierite, biotite and quartz in schist, gneiss, hornfels and also rarely in pegmatites. Dumortierite and mullite are similar mineral species found in porcelain.Klein, C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groundwater
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology. Typically, groundwater is thought of as water flowing through shallow aquifers, but, in the technical sense, it can also contain soil moisture, perma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquifer
An aquifer is an underground layer of water-bearing, permeable rock, rock fractures, or unconsolidated materials (gravel, sand, or silt). Groundwater from aquifers can be extracted using a water well. Aquifers vary greatly in their characteristics. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology. Related terms include aquitard, which is a bed of low permeability along an aquifer, and aquiclude (or ''aquifuge''), which is a solid, impermeable area underlying or overlying an aquifer, the pressure of which could create a confined aquifer. The classification of aquifers is as follows: Saturated versus unsaturated; aquifers versus aquitards; confined versus unconfined; isotropic versus anisotropic; porous, karst, or fractured; transboundary aquifer. Challenges for using groundwater include: overdrafting (extracting groundwater beyond the Dynamic equilibrium, equilibrium yield of the aquifer), groundwater-related subsidence of land, gro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Mines (India)
The Ministry of Mines is the ministry in the Government of India. The ministry functions as the primary body for the formulation and administration of laws relating to mines in India. The head of the ministry is Pralhad Joshi, who has been serving since June 2019. Functions The Ministry of Mines is responsible for surveying and exploring for minerals (other than natural gas and petroleum) that are used in mining and metallurgy. It searches for non-ferrous metals including: aluminium, copper, zinc, lead, gold, nickel, etc. for administration of Mines and Minerals (Development and Regulation) Act, 1957 (MMDR Act) in respect of all mines and minerals other than coal and lignite. There is one attached office, one subordinate office, three public sector undertakings (PSUs), three autonomous bodies, and additional agencies working under the support of the Ministry of Mines. Attached office * Geological Survey of India; headquarters at Kolkata Subordinate office * Indian Bureau o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Government Of India
The Government of India (ISO: ; often abbreviated as GoI), known as the Union Government or Central Government but often simply as the Centre, is the national government of the Republic of India, a federal democracy located in South Asia, consisting of 28 union states and eight union territories. Under the Constitution, there are three primary branches of government: the legislative, the executive and the judiciary, whose powers are vested in a bicameral Parliament, President, aided by the Council of Ministers, and the Supreme Court respectively. Through judicial evolution, the Parliament has lost its sovereignty as its amendments to the Constitution are subject to judicial intervention. Judicial appointments in India are unique in that the executive or legislature have negligible say. Etymology and history The Government of India Act 1833, passed by the British parliament, is the first such act of law with the epithet "Government of India". Basic structure The gover ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Energy Regulatory Board
The Atomic Energy Regulatory Board (AERB) was constituted on 15 November 1983 by the President of India by exercising the powers conferred by Section 27 of the Atomic Energy Act, 1962 (33 of 1962) to carry out certain regulatory and safety functions under the Act. The regulatory authority of AERB is derived from the rules and notifications promulgated under the Atomic Energy Act, 1962 and the Environmental (Protection) Act, 1986. The headquarters is in Mumbai. The mission of the Board is to ensure that the use of ionising radiation and Nuclear power, nuclear energy in India does not cause undue risk to health and the Natural environment, environment. Currently, the Board consists of a full-time Chairman, an ''ex officio'' Member, three part-time Members and a Secretary. AERB is supported by the Safety Review Committee for Operating Plants (SARCOP), Safety Review Committee for Applications of Radiation (SARCAR) and Advisory Committees for Project Safety Review (ACPSRs) (e.g. Pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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