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Mine Disaster
A mining accident is an accident that occurs during the process of mining minerals or metals. Thousands of miners die from mining accidents each year, especially from underground coal mining, although accidents also occur in hard rock mining. Coal mining is considered much more hazardous than hard rock mining due to flat-lying rock strata, generally incompetent rock, the presence of methane gas, and coal dust. Most of the deaths these days occur in developing countries, and rural parts of developed countries where safety measures are not practiced as fully. A mining disaster is an incident where there are five or more fatalities. Causes Mining accidents can occur from a variety of causes, including leaks of poisonous gases such as hydrogen sulfide or explosive natural gases, especially firedamp or methane, dust explosions, collapsing of mine stopes, mining-induced seismicity, flooding, or general mechanical errors from improperly used or malfunctioning mining equipment (suc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic viability of investing in the equipment, labor, and energy required to extract, refine and transport the materials found at the mine to manufacturers who can use the material. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Safety Lamp
A safety lamp is any of several types of lamp that provides illumination in coal mines and is designed to operate in air that may contain coal dust or gases, both of which are potentially flammable or explosive. Until the development of effective electric lamps in the early 1900s, miners used flame lamps to provide illumination. Open flame lamps could ignite flammable gases which collected in mines, causing explosions; safety lamps were developed to enclose the flame and prevent it from igniting the surrounding atmosphere. Flame safety lamps have been replaced in mining with sealed explosion-proof electric lights. Background Damps or gases Miners have traditionally referred to the various gases encountered during mining as damps, from the Middle Low German word ''dampf'' (meaning "vapour"). Damps are variable mixtures and are historic terms. * ''Firedamp'' Naturally occurring flammable mixtures, principally methane. * ''Blackdamp'' or ''Chokedamp'' Nitrogen and carbon dioxide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in 2021 of 3,107,500 and has a total area of . Wales has over of coastline and is largely mountainous with its higher peaks in the north and central areas, including Snowdon (), its highest summit. The country lies within the Temperateness, north temperate zone and has a changeable, maritime climate. The capital and largest city is Cardiff. Welsh national identity emerged among the Celtic Britons after the Roman withdrawal from Britain in the 5th century, and Wales was formed as a Kingdom of Wales, kingdom under Gruffydd ap Llywelyn in 1055. Wales is regarded as one of the Celtic nations. The Conquest of Wales by Edward I, conquest of Wales by Edward I of England was completed by 1283, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymmer, Rhondda Cynon Taf
Cymmer ( cy, Y Cymer) is a village and community in the Rhondda Valley, Wales. It is so named because of being located at the 'confluence' of the Rhondda Fawr and Rhondda Fach river valleys. Several collieries were opened here in the middle part of the nineteenth century. A coal mine disaster in 1856 resulted in 114 casualties, and the lack of payment of any compensation to the miners' families caused bitter feelings in the community. Location Cymmer is located in the lower Rhondda Valley about halfway between Treorchy and Pontypridd. It is situated on the A4119 road half a mile from its junction with the A4058 road. Neighbouring settlements are Penygraig, Trealaw, Tonypandy, Dinas Rhondda, Llwyncelyn and Porth. Cymmer comprises the villages of Trehafod, Trebanog, Britannia, Glynfach and Cymmer itself. History George Insole and his son James Harvey Insole owned the mineral rights to the land at Cymmer. Several collieries were sunk in the vicinity, namely Cymmer Colliery (Old ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymmer Colliery Explosion
The Cymmer Colliery explosion occurred in the early morning of 15 July 1856 at the Old Pit mine of the Cymmer, Rhondda Cynon Taf, Cymmer Coal mining, Colliery near Porth (lower Rhondda, Rhondda Valley), Wales, operated by George Insole & Son. The underground gas explosion resulted in a "sacrifice of human life to an extent unparalleled in the history of coal mining of this country" in which 114 men and boys were killed. Thirty-five widows, ninety-two children, and other dependent relatives were left with no immediate means of support. The immediate cause of the explosion was defective Underground mine ventilation, mine ventilation and the use of naked flames underground. Factors contributing to the explosion included the rapid development of the mine to meet increased demand for coal, poor mine safety practices allowed by management despite official warnings, and deteriorating working relationships between miners and management. After the explosion, mine owner James Harvey I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senghenydd Pit Disaster 1
Senghenydd ( cy, Senghennydd, ) is a former mining town in the community of Aber Valley in South Wales, approximately four miles northwest of the town of Caerphilly. Historically within the county of Glamorgan, it is now situated in the county borough of Caerphilly. In the United Kingdom Census 2001, the population of the Aber Valley was 6,696. Toponym The name derives originally from the name Sangan + suffix ydd, probably meaning "the land or territory associated with Sangan". The suffix 'ydd' is often used in Welsh, following a personal name, to denote ownership, as in 'Meirionnydd' or 'Eifionydd'. Historically the name has appeared in a number of different forms, including: 'Seinhenit' (c. 1179), 'Seighenith' (c. 1194), 'Seynghenyth' (1271), 'Senghenyth' (1314), 'Seynthenneth' (1476), 'Seignhenith Suptus et Supra Cayach' (1578–84). Alternatively, the name may be a spelling variant, from 1326, of 'Seint Genith', from Saint Cenydd. The local church and school have taken t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mine No 6 Va Explosion
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 * 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 * Mining (military), digging under a fortified military position to penetrate its defenses * 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 ships or submarines * Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Monoxide Poisoning
Carbon monoxide poisoning typically occurs from breathing in carbon monoxide (CO) at excessive levels. Symptoms are often described as "flu-like" and commonly include headache, dizziness, weakness, vomiting, chest pain, and confusion. Large exposures can result in loss of consciousness, arrhythmias, seizures, or death. The classically described "cherry red skin" rarely occurs. Long-term complications may include chronic fatigue, trouble with memory, and movement problems. CO is a colorless and odorless gas which is initially non-irritating. It is produced during incomplete burning of organic matter. This can occur from motor vehicles, heaters, or cooking equipment that run on carbon-based fuels. Carbon monoxide primarily causes adverse effects by combining with hemoglobin to form carboxyhemoglobin (HbCO) preventing the blood from carrying oxygen and expelling carbon dioxide as carbaminohemoglobin. Additionally, many other hemoproteins such as myoglobin, Cytochrome P450, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manchukuo
Manchukuo, officially the State of Manchuria prior to 1934 and the Empire of (Great) Manchuria after 1934, was a puppet state of the Empire of Japan in Northeast China, Manchuria from 1932 until 1945. It was founded as a republic in 1932 after the Japanese invasion of Manchuria, and in 1934 it became a constitutional monarchy under the ''de facto'' control of Japan. It had limited Diplomatic recognition, international recognition. The area was the homeland of the Manchu people, Manchus, including the emperors of the Qing dynasty. In 1931, Japanese invasion of Manchuria, Japan seized the region following the Mukden Incident. A pro-Japanese government was installed one year later with Puyi, the List of emperors of the Qing dynasty, last Qing emperor, as the nominal regent and later emperor. Manchukuo's government was dissolved in 1945 after the Surrender of Japan, surrender of Imperial Japan at the End of World War II in Asia, end of World War II. The territories claimed by Manc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puppet State
A puppet state, puppet régime, puppet government or dummy government, is a State (polity), state that is ''de jure'' independent but ''de facto'' completely dependent upon an outside Power (international relations), power and subject to its orders.Compare: Puppet states have nominal Sovereign state, sovereignty, but a foreign power effectively exercises control through means such as financial interests, economic, or military support. By leaving a local government in existence the outside Powers evade all responsibility, while at the same time successfully paralyzing the Government they tolerate. Puppet states are distinguished from Alliance, allies, which choose their actions on their own or in accordance with Treaty, treaties they voluntarily entered. Puppet states are forced into Rubber stamp (politics), providing legal endorsement for actions already taken by a foreign power. Characteristics A puppet state preserves the external paraphernalia of independence (such as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Mine
Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a 'pit', and the above-ground structures are a 'pit head'. In Australia, "colliery" generally refers to an underground coal mine. Coal mining has had many developments in recent years, from the early days of men tunneling, digging and manually extracting the coal on carts to large open-cut and longwall mines. Mining at this scale requires the use of draglines, trucks, conveyors, hydraulic jacks and shearers. The coal mining industry has a long history of significant negative environmental impacts on local ecosystems, health impacts on local communities and workers, and contributes heavily to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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