106-612: The Teesdale Mercury was until recently a family-owned rural weekly newspaper in County Durham in the United Kingdom, which has been published since 1854. It is based in the town of Barnard Castle , and has printing facilities there, which were used to print the paper until it switched to colour in 2015. The paper, along with its sister publication the Wear Valley Mercury (now closed), was owned by Lord Barnard . According to
212-683: A coal preparation plant . Technical and economic feasibility are evaluated based on the following: regional geological conditions; overburden characteristics; coal seam continuity, thickness, structure, quality, and depth; strength of materials above and below the seam for roof and floor conditions; topography, especially altitude and slope; climate; land ownership as it affects the availability of land for mining and access; surface drainage patterns; groundwater conditions; availability of labor and materials; coal purchaser requirements in terms of tonnage, quality, and destination; and capital investment requirements. Surface mining and deep underground mining are
318-697: A 70% increase over the 20 years since 1999. In 2018, the world production of brown coal (lignite) was 803.2 Mt, with Germany the world's largest producer at 166.3 Mt. China is most likely the second largest producer and consumer of lignite globally although specific lignite production data is not made available. Coal production has grown fastest in Asia, while Europe has declined. Since 2011, world coal production has been stable, with decreases in Europe and US offset by increases from China, Indonesia and Australia. The top coal mining nations are: Energy production from coal mining
424-579: A Northumbrian assault force. The Northumbrians wiped out the entire Norman army, including Comines, all except for one survivor, who was allowed to take the news of this defeat back. Following the Norman slaughter at the hands of the Northumbrians, resistance to Norman rule spread throughout Northern England, including a similar uprising in York. William The Conqueror subsequently (and successfully) attempted to halt
530-440: A coal mine and its structures are a colliery , a coal mine is called a "pit", and above-ground mining structures are referred to as 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
636-467: A coal seam occurring near the top of a ridge or hill, the entire top is removed in a series of parallel cuts. Overburden is deposited in nearby valleys and hollows. This method usually leaves the ridge and hilltops as flattened plateaus. The process is highly controversial for the drastic changes in topography, the practice of creating head-of-hollow-fills , or filling in valleys with mining debris, and for covering streams and disrupting ecosystems. Spoil
742-508: A fortification was thenceforth built. Ida was able to forge, hold and consolidate the kingdom; although the native British tried to take back their land, the Angles triumphed and the kingdom endured. In AD 604, Ida's grandson Æthelfrith forcibly merged Bernicia (ruled from Bamburgh ) and Deira (ruled from York , which was known as Eforwic at the time) to create the Kingdom of Northumbria . In time,
848-403: A greater proportion of the coal deposit than underground methods, as more of the coal seams in the strata may be exploited. This equipment can include the following: Draglines which operate by removing the overburden, power shovels, large trucks in which transport overburden and coal, bucket wheel excavators, and conveyors. In this mining method, explosives are first used in order to break through
954-472: A higher amount of energy per unit mass, specific energy or massic energy, and can often be obtained in areas where wood is not readily available. Though it was used historically as a domestic fuel, coal is now used mostly in industry, especially in smelting and alloy production, as well as electricity generation . Large-scale coal mining developed during the Industrial Revolution , and coal provided
1060-440: A land use condition is not equal to the original use. Existing land uses (such as livestock grazing, crop and timber production) are temporarily eliminated in mining areas. High-value, intensive-land-use areas like urban and transportation systems are not usually affected by mining operations. If mineral values are sufficient, these improvements may be removed to an adjacent area. Strip mining eliminates existing vegetation, destroys
1166-440: A large dining-room table, but with hydraulic jacks for legs. After the large pillars of coal have been mined away, the mobile roof support's legs shorten and it is withdrawn to a safe area. The mine roof typically collapses once the mobile roof supports leave an area. There are six principal methods of underground mining: Coal is mined commercially in over 50 countries. 7,921 million metric tons (Mt) of coal were produced in 2019,
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#17330930159221272-447: A method that currently accounts for about 60 percent of world coal production. In deep mining, the room and pillar or bord and pillar method progresses along the seam, while pillars and timber are left standing to support the mine roof. Once room and pillar mines have been developed to a stopping point limited by geology, ventilation, or economics, a supplementary version of room and pillar mining, termed second mining or retreat mining ,
1378-545: A non-Northumbrian as Bishop of Durham in 1042, the people of the region became increasingly rebellious. In response, in January 1069, William despatched a large Norman army, under the command of Robert de Comines , to Durham City . The army, believed to consist of 700 cavalry (about one-third of the number of Norman knights who had participated in the Battle of Hastings), entered the city, whereupon they were attacked, and defeated, by
1484-574: A result of occupational exposures is coined occupational hearing loss . To protect miners' hearing, the US Mine Safety and Health Administration 's (MSHA) guidelines for noise place a Permissible Exposure Limit (PEL) for noise at 90 dBA time-weighted over 8 hours. A lower cutoff, 85 dBA, is set for a worker to fall into the MSHA Action Level which dictates that workers be placed into hearing conservation programs. Noise exposures vary depending on
1590-632: A shrine in the White Church, which was originally a wooden structure but was eventually fortified into a stone building. Once the City of Durham had been founded, the Bishops of Durham gradually acquired the lands that would become County Durham. Bishop Aldhun began this process by procuring land in the Tees and Wear valleys, including Norton, Stockton, Escomb and Aucklandshire in 1018. In 1031, King Canute gave Staindrop to
1696-591: A substantial territory to St Cuthbert on his election to the see of Lindisfarne in 684. In about 883 a cathedral housing the saint's remains was established at Chester-le-Street and Guthfrith, King of York granted the community of St Cuthbert the area between the Tyne and the Wear , before the community reached its final destination in 995, in Durham. Following the Norman invasion ,
1802-485: A surface (also called an open cast) mine. Additionally, coal seam thickness and geology are factors in the selection of a mining method. The most economical method of coal extraction for surface mines is the electric shovel or drag line. The most economical form of underground mining is the long wall, which involves using two spinning drums with carbide bits that runs along sections of the coal seam. Many coals extracted from both surface and underground mines require washing in
1908-425: A three-weekly court corresponding to the hundred court. The diocese was divided into the archdeaconries of Durham and Northumberland. The former is mentioned in 1072, and in 1291 included the deaneries of Chester-le-Street, Auckland, Lanchester and Darlington. The term palatinus is applied to the bishop in 1293, and from the 13th century onwards the bishops frequently claimed the same rights in their lands as
2014-519: Is a ceremonial county in North East England . The county borders Northumberland and Tyne and Wear to the north, the North Sea to the east, North Yorkshire to the south, and Cumbria to the west. The largest settlement is Darlington . The county has an area of 2,676 square kilometres (1,033 sq mi) and a population of 872,075. The latter is concentrated in the east; the south-east
2120-575: Is accomplished by drilling holes into the overburden, filling the holes with explosives, and detonating the explosive. The overburden is then removed, using large earth-moving equipment, such as draglines , shovel and trucks, excavator and trucks, or bucket-wheels and conveyors. This overburden is put into the previously mined (and now empty) strip. When all the overburden is removed, the underlying coal seam will be exposed (a 'block' of coal). This block of coal may be drilled and blasted (if hard) or otherwise loaded onto trucks or conveyors for transport to
2226-427: Is commonly started. Miners remove the coal in the pillars, thereby recovering as much coal from the coal seam as possible. A work area involved in pillar extraction is called a pillar section. Modern pillar sections use remote-controlled equipment, including large hydraulic mobile roof-supports, which can prevent cave-ins until the miners and their equipment have left a work area. The mobile roof supports are similar to
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#17330930159222332-418: Is dedicated to mining activities until it can be reshaped and reclaimed. If mining is allowed, resident human populations must be resettled off the mine site; economic activities, such as agriculture or hunting and gathering food and medicinal plants are interrupted. What becomes of the land surface after mining is determined by the manner in which the mining is conducted. Usually reclamation of disturbed lands to
2438-516: Is highly concentrated in certain jurisdictions, which also concentrates much of the social and economic impacts of the industry to these regions. The industry directly employs over seven million workers worldwide, which, in turn, creates millions of indirect jobs. In several parts of the world, producers have reached peak coal as some economies shift away from fossil fuels to address climate change. A 2020 study found that renewables jobs could feasibly be created in these geographies to replace many of
2544-479: Is mostly used to generate electricity, and 75% of annual coal production is exported, mostly to eastern Asia. In 2007, 428 million tonnes of coal was mined in Australia. In 2007, coal provided about 85% of Australia's electricity production. In the fiscal year 2008/09, 487 million tonnes of coal was mined, and 261 million tonnes was exported. In the fiscal year 2013/14, 430.9 million tonnes of coal
2650-421: Is not generally recognised as the highest point in Durham. The two main dales of County Durham (Teesdale and Weardale) and the surrounding fells, many of which exceed 2,000 feet (610 m) in height, are excellent hillwalking country, although not nearly as popular as the nearby Yorkshire Dales and Lake District national parks. The scenery is rugged and remote, and the high fells have a landscape typical of
2756-462: Is part of the Teesside built-up area, which extends into North Yorkshire. After Darlington (92,363), the largest settlements are Hartlepool (88,855), Stockton-on-Tees (82,729), and Durham (48,069). For local government purposes the county comprises three unitary authority areas— County Durham , Darlington , and Hartlepool —and part of a fourth, Stockton-on-Tees . The county historically included
2862-480: Is partially parished . The city of Durham is the most populous settlement in the county to have a parish. Multiple parishes are styled as having town councils : Billingham (in Stockton Borough), Barnard Castle , Bishop Auckland , Chilton , Ferryhill , Great Aycliffe , Newton Aycliffe , Greater Willington , Peterlee , Seaham , Sedgefield , Shildon , Spennymoor , Stanley and Tow Law . The county
2968-417: Is partially economically recoverable. Coal refuse is distinct from the byproducts of burning coal, such as fly ash . Piles of coal refuse can have significant negative environmental consequences, including the leaching of iron, manganese, and aluminum residues into waterways and acid mine drainage . The runoff can create both surface and groundwater contamination. The piles also create a fire hazard, with
3074-593: Is placed at the head of a narrow, steep-sided valley or hollow. In preparation for filling this area, vegetation and soil are removed and a rock drain constructed down the middle of the area to be filled, where a natural drainage course previously existed. When the fill is completed, this underdrain will form a continuous water runoff system from the upper end of the valley to the lower end of the fill. Typical head-of-hollow fills are graded and terraced to create permanently stable slopes. Most coal seams are too deep underground for opencast mining and require underground mining,
3180-436: Is referred to as 'overburden' and is removed in long strips. The overburden from the first strip is deposited in an area outside the planned mining area and referred to as out-of-pit dumping. Overburden from subsequent strips is deposited in the void left from mining the coal and overburden from the previous strip. This is referred to as in-pit dumping. It is often necessary to fragment the overburden by use of explosives. This
3286-515: Is removed and overburden dumped to the side. Dust, vibration, and diesel exhaust odors are created (affecting sight, sound, and smell). Residents of local communities often find such impacts disturbing or unpleasant. In case of mountaintop removal , tops are removed from mountains or hills to expose thick coal seams underneath. The soil and rock removed is deposited in nearby valleys, hollows and depressions, resulting in blocked (and contaminated) waterways. Removal of soil and rock overburden covering
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3392-701: Is still common, with 4,000 new cases of black lung every year in the US (4 percent of workers annually) and 10,000 new cases every year in China (0.2 percent of workers). The use of water sprays in mining equipment reduces the risk to miners' lungs. Build-ups of a hazardous gas are known as damps, possibly from the German word Dampf which means steam or vapor: Noise is also a contributing factor to potential adverse effects on coal miners' health. Exposure to excessive noise can lead to noise-induced hearing loss . Hearing loss developed as
3498-424: Is the trig point (not the summit) of Burnhope Seat , height 746 metres (2,448 ft), between Weardale and Teesdale on the border with historic Cumberland in the far west of the county. The local government reorganisation of 1974 placed the higher Mickle Fell south of Teesdale (the county top of Yorkshire ) within the administrative borders of Durham (where it remains within the ceremonial county). However, it
3604-435: Is used for both thermal and metallurgical coals . In New South Wales open casting for steam coal and anthracite is practiced. Surface mining accounts for around 80 percent of production in Australia, while in the US it is used for about 67 percent of production. Globally, about 40 percent of coal production involves surface mining. Strip mining exposes coal by removing earth above each coal seam. This earth to be removed
3710-513: The Anglo-Saxon period the region was part of the Kingdom of Northumbria . In 995 the city of Durham was founded by monks seeking a place safe from Viking raids to house the relics of St Cuthbert . Durham Cathedral was rebuilt after the Norman Conquest , and together with Durham Castle is now a World Heritage Site . By the late Middle Ages the county was governed semi-independently by
3816-501: The Battle of Marston Moor (2 July 1644) fell entirely into the hands of Parliament. In 1614, a Bill was introduced in Parliament for securing representation to the county and city of Durham and the borough of Barnard Castle . The bishop strongly opposed the proposal as an infringement of his palatinate rights, and the county was first summoned to return members to Parliament in 1654. After
3922-574: The Bishops of Durham , who for centuries governed Durham as a county palatine (the County Palatine of Durham ) outside the usual structure of county administration in England. The situation regarding the formal name in modern local government is less clear: Around AD 547, an Angle named Ida founded the kingdom of Bernicia after spotting the defensive potential of a large rock at Bamburgh, upon which many
4028-631: The Craikshire exclave within the North Riding of Yorkshire. In 1831 the county covered an area of 679,530 acres (2,750.0 km ) and had a population of 253,910. These exclaves were included as part of the county for parliamentary electoral purposes until 1832, and for judicial and local-government purposes until the coming into force of the Counties (Detached Parts) Act 1844 , which merged most remaining exclaves with their surrounding county. The boundaries of
4134-869: The NHS . Northumbria Ambulance Service and County Durham Ambulance Service (following historic county borders) merged on 1 April 1999 to become the North East service. In 2005 the area was adapted to the modern North East England regional extent. Air ambulance services are provided by the Great North Air Ambulance . The charity operates three bases, including one in Eaglescliffe . Teesdale and Weardale Search and Mountain Rescue Team, are based at Sniperly Farm in Durham City and respond to search and rescue incidents in
4240-534: The Pennines with extensive areas of tussock grass and blanket peat bog in the west, with heather moorland on the lower slopes descending to the east. The following climate figures were gathered at the Durham weather station between 1981 and 2010: County Durham, as considered a county for lieutenancy purposes by the Lieutenancies Act 1997, is administered as a part of the constituent country of England in
4346-631: The River Tees ) becoming a part of the ceremonial county. The non-metropolitan county was reconstituted on 1 April 2009: the strategic services-providing Durham County Council was re-organised into a single district of the same name, merging with the seven local facility-providing districts in the non-metropolitan county and became structured as a unitary authority . It has 126 councillors. The three pre-existing unitary authorities were unaffected. The county boundaries used for parliamentary constituencies are those used between 1974 and 1996, consisting of
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4452-448: The bishops of Durham and was also a buffer zone between England and Scotland. County Durham became heavily industrialised in the nineteenth century, when many collieries opened on the Durham coalfield . The Stockton and Darlington Railway , the world's first public railway to use steam locomotives, opened in 1825. Most collieries closed during the last quarter of the twentieth century, but
4558-496: The global energy economy . The major coal producing countries, though, such as China , Indonesia, India and Australia , have not reached peak production, with production increases replacing falls in Europe and the United States and proposed mines under development. The coal mining industry employs almost 2.7 million workers. The History of coal mining goes back thousands of years, with early mines documented in ancient China,
4664-400: The 1860s onward. By the late 20th century, coal was, for the most part, replaced in domestic as well as industrial and transportation usage by oil , natural gas or electricity produced from oil, gas, nuclear power or renewable energy sources. By 2010, coal produced over a fourth of the world's energy. Coal extraction methods vary depending on whether the mine is an underground mine or
4770-465: The 1974 until 1996, the ceremonial county was split into eight districts : A non-metropolitan county replaced the administrative county. The boundaries only deviated from the ceremonial boundaries after 1995 when the Darlington Borough became a unitary authority . On the 1 April 1996, the county of Cleveland was abolished with its boroughs of Hartlepool and Stockton-on-Tees (north of
4876-826: The Bishops also had the authority to appoint judges and barons and to offer pardons. There were ten palatinate barons in the 12th century, most importantly the Hyltons of Hylton Castle , the Bulmers of Brancepeth , the Conyers of Sockburne, the Hansards of Evenwood, and the Lumleys of Lumley Castle . The Nevilles owned large estates in the county. John Neville, 3rd Baron Neville de Raby rebuilt Raby Castle , their principal seat, in 1377. Edward I 's quo warranto proceedings of 1293 showed twelve lords enjoying more or less extensive franchises under
4982-482: The Bishops. This territory continued to expand, and was eventually given the status of a liberty . Under the control of the Bishops of Durham, the land had various names: the "Liberty of Durham", "Liberty of St Cuthbert's Land" "the lands of St Cuthbert between Tyne and Tees" or "the Liberty of Haliwerfolc" (holy Wear folk). The bishops' special jurisdiction rested on claims that King Ecgfrith of Northumbria had granted
5088-629: The County Durham district and the Darlington Borough. This area elects seven Members of Parliament. As of the 2019 General Election, four of these MPs are Conservatives and three MPs are Labour . The rest of the ceremonial county is included in the Cleveland parliamentary constituency area . The police and fire services operate according to the 1974-96 ceremonial county boundaries: The North East Ambulance Service NHS Trust cover North East England and are responsible for providing ambulance services for
5194-610: The Deiran part of the kingdom in AD 867 (which became Jórvík ). The land that would become County Durham now sat on the border with the Great Heathen Army , a border which today still forms the boundaries between the historic counties of Yorkshire and County Durham. Viking settlement petered out at the Tees and the lands north thereof lay outside of the Danelaw. The House of Bamburgh, successors of
5300-609: The English realm, thus Bamburgh and the Haliwerfolc went on to become contested buffer states between England and Scotland. In AD 995, St Cuthbert's community, who had been transporting Cuthbert's remains around, partly in an attempt to avoid them falling into the hands of Viking raiders, settled at Dunholm (Durham) on a site that was defensively favourable due to the horseshoe-like path of the River Wear. St Cuthbert's remains were placed in
5406-636: The Holdthefrontpage website the paper was sold in 2024 to Andy Barr, who also owns the Cumberland & Westmorland Herald, Keswick Reminder and the Cumbria Crack website. [6] 6. https://www.holdthefrontpage.co.uk/2024/news/independent-weekly-sold-to-new-owner-after-170-years/ This English newspaper–related article is a stub . You can help Misplaced Pages by expanding it . County Durham County Durham , officially simply Durham ( /ˈdʌrəm/ ),
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#17330930159225512-657: The Kings of Bernicia and Northumbria, retained control north of the Tyne; between the Tyne and the Tees emerged the Community of St. Cuthbert or Haliwerfolc , successors of the See of Lindisfarne. The House of Wessex absorbed the Kingdom of York into the unified English Kingdom in 954 and claimed overlordship over Northumbria. However, the lands north of the Tees remained outside the governmental frontiers of
5618-626: The Restoration of 1660 the county and city returned two members each. In the wake of the Reform Act of 1832 the county returned two members for two divisions, and the boroughs of Gateshead , South Shields and Sunderland acquired representation. The bishops lost their secular powers in 1836. The boroughs of Darlington, Stockton and Hartlepool returned one member each from 1868 until the Redistribution Act of 1885 . The historic county excludes
5724-573: The Roman Empire and other early historical economies. It became important in the Industrial Revolution of the 19th and 20th centuries, when it was primarily used to power steam engines, heat buildings and generate electricity. Coal mining continues as an important economic activity today, but has begun to decline due to the strong contribution coal plays in global warming and environmental issues, which result in decreasing demand and in some geographies, peak coal . Compared to wood fuels , coal yields
5830-454: The Tees forms the boundary with North Yorkshire in its lower reaches, and the Wear exits the county near Chester-le-Street in the north-east. The county's coast is a site of special scientific interest characterised by tall limestone and dolomite cliffs. What is now County Durham was on the border of Roman Britain , and contains survivals of this era at sites such as Binchester Roman Fort . In
5936-787: The U.S., Examples include the Sago Mine disaster of 2006, and the 2007 mine accident in Utah 's Crandall Canyon Mine , where nine miners were killed and six entombed. In the decade 2005–2014, US coal mining fatalities averaged 28 per year. The most fatalities during the 2005–2014 decade were 48 in 2010, the year of the Upper Big Branch Mine disaster in West Virginia, which killed 29 miners. Chronic lung diseases, such as pneumoconiosis (black lung) were once common in miners, leading to reduced life expectancy . In some mining countries black lung
6042-608: The US Department of Labor's Mine Safety and Health Administration (MSHA) show that between 1990 and 2004, the industry cut the rate of injuries by more than half and fatalities by two-thirds. But according to the Bureau of Labor Statistics , even in 2006, mining remained the second most dangerous occupation in America, when measured by fatality rate . These numbers, however, include all mining activities, and oil and gas mining contribute to
6148-486: The United Kingdom. The area is appointed a lord lieutenant and a high sheriff . The ceremonial county is divided into four administrative counties (see table below), one of which - Stockon-on-Tees - also extends into North Yorkshire. Technically, for administrative purposes, the County of Durham only consists of the area governed by Durham County Council . The three other areas are counties in their own right. The county
6254-529: The administrative counties years of administrating; each remained in the ceremonial county while outside of the administrative county. The ceremonial county remained under the same borders as the historic county until 1968 when the County Borough of Teesside formed. Ceremonial duties of the borough (which were made up of areas from two counties) were in the North Riding of Yorkshire ceremonial county. From
6360-552: The administrative machinery of government extended only slowly into northern England. Northumberland's first recorded Sheriff was Gilebert from 1076 until 1080 and a 12th-century record records Durham regarded as within the shire. However the bishops disputed the authority of the sheriff of Northumberland and his officials, despite the second sheriff for example being the reputed slayer of Malcolm Canmore , King of Scots. The crown regarded Durham as falling within Northumberland until
6466-596: The bishop. In 1596 restrictions were imposed on the powers of the chancery, and in 1646 the palatinate was formally abolished. It was revived, however, after the Restoration , and continued with much the same power until 5 July 1836, when the Durham (County Palatine) Act 1836 provided that the palatine jurisdiction should in future be vested in the Crown. During the 15th-century Wars of the Roses , Henry VI passed through Durham. On
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#17330930159226572-463: The bishop. The repeated efforts of the Crown to check the powers of the palatinate bishops culminated in 1536 in the Act of Resumption, which deprived the bishop of the power to pardon offences against the law or to appoint judicial officers. Moreover, indictments and legal processes were in future to run in the name of the king, and offences to be described as against the peace of the king, rather than that of
6678-464: The ceremonial county at 857,800. Collieries Coal mining is the process of extracting coal from the ground or from a mine. 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 ,
6784-618: The ceremonial county, the city of Sunderland , the boroughs of Gateshead and South Tyneside , while the non-metropolitan county includes part of Yorkshire . County Durham contains a small area of the North East Green Belt in the county's north; surrounding the city of Durham, Chester-le-Street and other communities along the shared county border with Tyne and Wear, avoiding Wearside 's spread west. A smaller green belt separates Urpeth , Ouston , Pelton , and Perkinsville from Birtley in Tyne and Wear. A further small segment by
6890-581: The coal mining jobs as part of a just transition ; however, renewable energy was not suitable in some of the geographies with high concentrations of miners, such as in China, which is far and away the leading coal-mining nation. Coal refuse (also described as coal waste, rock, slag, coal tailings, waste material, rock bank, culm, boney, or gob ) is the material left over from coal mining, usually as tailings piles or spoil tips . For every tonne of hard coal generated by mining, 400 kg (880 lb) of waste material remains, which includes some lost coal that
6996-497: The coal preparation (or wash) plant. Once this strip is empty of coal, the process is repeated with a new strip being created next to it. This method is most suitable for areas with flat terrain. Equipment to be used depends on geological conditions. For example, to remove overburden that is loose or unconsolidated, a bucket wheel excavator might be the most productive. The life of some area mines may be more than 50 years. The contour mining method consists of removing overburden from
7102-857: The coal resource may cause burial and loss of topsoil, exposes parent material, and creates large infertile wastelands. Soil disturbance and associated compaction result in conditions conducive to erosion. Soil removal from the area to be surface-mined alters or destroys many natural soil characteristics, and reduces its biodiversity and productivity for agriculture. Soil structure may be disturbed by pulverization or aggregate breakdown. Top 10 hard and brown coal producers in 2012 were (in million metric tons): China 3,621, United States 922, India 629, Australia 432, Indonesia 410, Russia 351, South Africa 261, Germany 196, Poland 144, and Kazakhstan 122. Coal has been mined in every state of Australia, but mainly in Queensland, New South Wales and Victoria. It
7208-676: The coast separates Seaham from the Sunderland settlements of Beckwith Green and Ryhope . It was first drawn up in the 1990s. County Durham is underlain by Carboniferous rocks in the west. Permian and Triassic strata overlie these older rocks in the east. These sedimentary sequences have been cut by igneous dykes and sills . The county contains a sizeable area of the North Pennines , designated an Area of Outstanding Natural Beauty , primarily west of Tow Law and Barnard Castle . The highest point ( county top ) of historic County Durham
7314-408: The county proper remained in use for administrative and ceremonial purposes until the 1972 Local Government Act . Following the Battle of Hastings, William the Conqueror appointed Copsig as Earl of Northumbria, thereby bringing what would become County Durham under Copsig's control. Copsig was, just a few weeks later, killed in Newburn. Having already being previously offended by the appointment of
7420-408: The county's coal mining heritage is remembered in the annual Durham Miners' Gala . The ceremonial county is officially named Durham , but the county has long been commonly known as County Durham and is the only English county name prefixed with "County" in common usage (a practice common in Ireland ). Its unusual naming (for an English shire) is explained to some extent by the relationship with
7526-420: The county. The Office for National Statistics estimated in 2016 that the Durham County Council area had a population of 522,100, the Borough of Darlington a population of 105,600, the Borough of Hartlepool a population of 92,800, and the part of the Borough of Stockton-on-Tees in County Durham (the other part being in North Yorkshire) a population of 137,300. This gives the total estimated population of
7632-429: The developed world. Modern coal mining in the US has an average 23 deaths per year due to mine accidents (2001–2020). However, in lesser developed countries and some developing countries, many miners continue to die annually, either through direct accidents in coal mines or through adverse health consequences from working under poor conditions. China , in particular, has the highest number of coal mining related deaths in
7738-455: The disruptive activities of blasting, ripping, and excavating coal. Stripping of overburden eliminates and destroys archeological and historic features, unless they are removed beforehand. The removal of vegetative cover and activities associated with the construction of haul roads, stockpiling of topsoil, displacement of overburden and hauling of soil and coal increase the quantity of dust around mining operations. Dust degrades air quality in
7844-544: The eastern portion of the cathedral, the churches of Darlington, Hartlepool, and St Andrew, Auckland, Sedgefield, and portions of a few other churches. Until the 15th century, the most important administrative officer in the Palatinate was the steward . Other officers included the sheriff, the coroners, the Chamberlain and the chancellor . The palatine exchequer originated in the 12th century. The palatine assembly represented
7950-571: The fatalities occurring in the first half of the 20th century. 3,242 died in 1907, the worst year ever; in 2020 there were five. Open cut hazards are principally mine wall failures and vehicle collisions; underground mining hazards include suffocation, gas poisoning, roof collapse, rock burst , outbursts , and gas explosions. Firedamp explosions can trigger the far more dangerous coal dust explosions, which can engulf an entire mine. Most of these risks are greatly reduced in modern mines, and multiple fatality incidents are now rare in most parts of
8056-457: The genetic soil profile, displaces or destroys wildlife and habitat, alters current land uses, and to some extent permanently changes the general topography of the area mined. Adverse impacts on geological features of human interest may occur in a coal strip mine. Geomorphic and geophysical features and outstanding scenic resources may be sacrificed by indiscriminate mining. Paleontological, cultural, and other historic values may be endangered due to
8162-450: The immediate area, has an adverse impact on vegetative life, and constitutes health and safety hazards for mine workers and nearby residents. Surface mining disrupts virtually all aesthetic elements of the landscape. Alteration of land forms often imposes unfamiliar and discontinuous configurations. New linear patterns appear as material is extracted and waste piles are developed. Different colors and textures are exposed as vegetative cover
8268-527: The king enjoyed in his kingdom. The historic boundaries of County Durham included a main body covering the catchment of the Pennines in the west, the River Tees in the south, the North Sea in the east and the Rivers Tyne and Derwent in the north. The county palatinate also had a number of liberties : the Bedlingtonshire , Islandshire and Norhamshire exclaves within Northumberland, and
8374-422: The late thirteenth century. Matters regarding the bishopric of Durham came to a head in 1293 when the bishop and his steward failed to attend proceedings of quo warranto held by the justices of Northumberland. The bishop's case went before parliament, where he stated that Durham lay outside the bounds of any English shire and that "from time immemorial it had been widely known that the sheriff of Northumberland
8480-552: The main source of primary energy for industry and transportation in industrial areas from the 18th century to the 1950s. Coal remains an important energy source. Coal is also mined today on a large scale by open pit methods wherever the coal strata strike the surface or are relatively shallow. Britain developed the main techniques of underground coal mining from the late 18th century onward, with further progress being driven by 19th-century and early 20th-century progress. However, oil and gas were increasingly used as alternatives from
8586-404: The majority of fatalities. Coal mining resulted in 47 fatalities that year. One study, though, has suggested that hazards of modern mining are now more accretive with workers facing long-term health impacts, such as sleep deprivation, that build up over time. Strip mining severely alters the landscape, which reduces the value of the natural environment in the surrounding land. The land surface
8692-461: The method of extraction. For example, a study has found that among surface coal mine operations, dragline equipment produced the loudest sound at a range of 88–112 dBA. Within longwall sections, stageloaders used to transport coal from the mining face and shearers used for extraction represent some of the highest noise exposures. Auxiliary fans (up to 120 dBA), continuous mining machines (up to 109 dBA), and roof bolters (up to 103 dBA) represent some of
8798-465: The mining workforce. in 2015 US coal mines had 65,971 employees, the lowest figure since EIA began collecting data in 1978. However, a 2016 study reported that a relatively minor investment would allow most coal workers to retrain for the solar energy industry. Coal mining has been a very dangerous activity and the list of historical coal mining disasters is long. In the U.S., 104,895 coal miners were killed in mine accidents since 1900, 90 percent of
8904-469: The noisiest equipment within continuous mining sections. Exposures to noise exceeding 90 dBA can lead to adverse effects on workers' hearing. The use of administrative controls and engineering controls can be used to reduce noise exposures. Improvements in mining methods (e.g. longwall mining), hazardous gas monitoring (such as safety-lamps or more modern electronic gas monitors), gas drainage, electrical equipment , and ventilation have reduced many of
9010-551: The northern rebellions by unleashing the notorious Harrying of the North (1069–1070). Because William's main focus during the harrying was on Yorkshire, County Durham was largely spared the Harrying. The best remains of the Norman period include Durham Cathedral and Durham Castle , and several parish churches, such as St Laurence Church in Pittington . The Early English period has left
9116-585: The open pit methods, due to thickness of the seam 20–25 metres (60–90 feet). Coals occurring below 90 m (300 ft) are usually deep mined. However, there are open pit mining operations working on coal seams up to 300–460 metres (1,000–1,500 feet) below ground level, for instance Tagebau Hambach in Germany. When coal seams are near the surface, it may be economical to extract the coal using open-cut , also referred to as open-cast, open-pit, mountaintop removal or strip, mining methods. Opencast coal mining recovers
9222-421: The operation reaches a predetermined stripping ratio (tons of overburden/tons of coal), it is not profitable to continue. Depending on the equipment available, it may not be technically feasible to exceed a certain height of highwall. At this point, it is possible to produce more coal with the augering method in which spiral drills bore tunnels into a highwall laterally from the bench to extract coal without removing
9328-614: The outbreak of the Great Rebellion in 1642 Durham inclined to support the cause of Parliament , and in 1640 the high sheriff of the palatinate guaranteed to supply the Scottish army with provisions during their stay in the county. In 1642 the Earl of Newcastle formed the western counties into an association for the King's service, but in 1644 the palatinate was again overrun by a Scottish army, and after
9434-408: The overburden. Mountaintop coal mining is a surface mining practice involving removal of mountaintops to expose coal seams, and disposing of associated mining overburden in adjacent "valley fills." Valley fills occur in steep terrain where there are limited disposal alternatives. Mountaintop removal mining combines area and contour strip mining methods. In areas with rolling or steep terrain with
9540-459: The part of Tyne and Wear south of the River Tyne , and excluded the area south of the River Tees . The west of the county contains part of the North Pennines uplands, a national landscape . The hills are the source of the rivers Tees and Wear , which flow east and form the valleys of Teesdale and Weardale respectively. The east of the county is flatter, and the two rivers meander through it;
9646-425: The potential to spontaneously ignite. Because most coal refuse harbors toxic components, it is not easily reclaimed by replanting with plants like beach grasses. The use of sophisticated sensing equipment to monitor air quality is common and has replaced the use of small animals such as canaries, often referred to as " miner's canaries ". In the United States, the increase in technology has significantly decreased
9752-619: The realm was expanded, primarily through warfare and conquest; at its height, the kingdom stretched from the River Humber (from which the kingdom drew its name) to the Forth. Eventually, factional fighting and the rejuvenated strength of neighbouring kingdoms, most notably Mercia, led to Northumbria's decline. The arrival of the Vikings hastened this decline, and the Scandinavian raiders eventually claimed
9858-399: The risks of rock falls, explosions, and unhealthy air quality. Gases released during the mining process can be recovered to generate electricity and improve worker safety with gas engines . Another innovation in recent years is the use of closed circuit escape respirators , respirators that contain oxygen for situations where mine ventilation is compromised. Statistical analyses performed by
9964-505: The role of the bishops in Durham, the "buffer state between England and Scotland": From 1075, the Bishop of Durham became a Prince-Bishop, with the right to raise an army, mint his own coins, and levy taxes. As long as he remained loyal to the king of England, he could govern as a virtually autonomous ruler, reaping the revenue from his territory, but also remaining mindful of his role of protecting England’s northern frontier. A report states that
10070-565: The seam in a pattern following the contours along a ridge or around the hillside. This method is most commonly used in areas with rolling to steep terrain. It was once common to deposit the spoil on the downslope side of the bench thus created, but this method of spoil disposal consumed much additional land and created severe landslide and erosion problems. To alleviate these problems, a variety of methods were devised to use freshly cut overburden to refill mined-out areas. These haul-back or lateral movement methods generally consist of an initial cut with
10176-432: The spoil deposited downslope or at some other site and spoil from the second cut refilling the first. A ridge of undisturbed natural material 15 to 20 ft (5 to 6 m) wide is often intentionally left at the outer edge of the mined area. This barrier adds stability to the reclaimed slope by preventing spoil from slumping or sliding downhill. The limitations of contour strip mining are both economic and technical. When
10282-476: The surface or overburden, of the mining area. The overburden is then removed by draglines or by shovel and truck. Once the coal seam is exposed, it is drilled, fractured and thoroughly mined in strips. The coal is then loaded onto large trucks or conveyors for transport to either the coal preparation plant or directly to where it will be used. Most open cast mines in the United States extract bituminous coal . In Canada, Australia, and South Africa, open cast mining
10388-524: The two basic methods of mining. The choice of mining method depends primarily on depth, density, overburden, and thickness of the coal seam; seams relatively close to the surface, at depths less than approximately 55 m (180 ft), are usually surface mined. Coal that occurs at depths of 55 to 90 m (180 to 300 ft) are usually deep mined, but in some cases surface mining techniques can be used. For example, some western U.S. coal that occur at depths in excess of 60 m (200 ft) are mined by
10494-452: 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 the global environmental crises, such as poor air quality and climate change . For these reasons, coal has been one of the first fossil fuels to be phased out of various parts of
10600-403: The village of Startforth , the ceremonial county excludes the city of Sunderland and the non-metropolitan county excludes the town of Stockton-on-Tees . The ceremonial county includes the non-metropolitan county with the addition of the boroughs of Darlington , Hartlepool , and Stockton-on-Tees . The historic county's boundaries stretched from the rivers Tyne to Tees and it is covered by
10706-456: The whole county, and dealt chiefly with fiscal questions. The bishop's council, consisting of the clergy, the sheriff and the barons , regulated judicial affairs, and later produced the Chancery and the courts of Admiralty and Marshalsea . The prior of Durham ranked first among the bishop's barons. He had his own court, and almost exclusive jurisdiction over his men. A UNESCO site describes
10812-441: The world, with official statistics claiming that 6,027 deaths occurred in 2004. To compare, 28 deaths were reported in the U.S. in the same year. Coal production in China is twice that in the US, while the number of coal miners is around 50 times that of the US, making deaths in coal mines in China 4 times as common per worker (108 times as common per unit output) as in the US. Mine disasters have still occurred in recent years in
10918-490: Was a liberty, sometimes referred to as a county, within Northumberland. In 1189 it was purchased for the see but continued with a separate sheriff , coroner and court of pleas. In the 14th century Sadberge was included in Stockton ward and was itself divided into two wards. The division into the four wards of Chester-le-Street, Darlington , Easington and Stockton existed in the 13th century, each ward having its own coroner and
11024-490: Was aligned to other historic counties of England from 1836 until 1889; multiple acts were passed removing exclaves, splitting the county from the bishopric and reforming its structure. The ceremonial county and administrative county were created under the Local Government Act 1888 in 1889. Darlington, Gateshead, West Hartlepool (later known as Hartlepool), South Shields and Sunderland became county boroughs during
11130-531: Was mined, and 375.1 million tonnes was exported. In 2013/14, coal provided about 69% of Australia's electricity production. In 2013, Australia was the world's fifth-largest coal producer, after China, the United States, India, and Indonesia. However, in terms of proportion of production exported, Australia is the world's second largest coal exporter, as it exports roughly 73% of its coal production. Indonesia exports about 87% of its coal production. A court in Australia has cited climate change in ruling against
11236-423: Was not sheriff of Durham nor entered within that liberty as sheriff. . . nor made there proclamations or attachments" . The arguments appear to have prevailed, as by the fourteenth century Durham was accepted as a liberty which received royal mandates direct. In effect it was a private shire, with the bishop appointing his own sheriff. The area eventually became known as the " County Palatine of Durham". Sadberge
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