Mineral wool is any fibrous material formed by spinning or drawing molten mineral or rock materials such as slag and ceramics .
113-415: RCF may refer to: Science and technology [ edit ] Refractory ceramic fibre, an aluminium silicate wool insulation, see High temperature insulation wool Rey-Osterrieth Complex Figure or Rey complex figure, a neuropsychological test Radio Communication Failure, a transponder code (see NORDO ) Relative centrifugal force, the acceleration in
226-612: A centrifuge normalized to Earth's gravity A Lexus RC F Rolling contact fatigue , a deformation mechanism Radiochromic film , a type of radiation detector Mathematics [ edit ] Rational canonical form in abstract algebra Real closed field in mathematics Row canonical form in linear algebra Companies [ edit ] Rail Coach Factory , Kapurthala , India Rashtriya Chemicals & Fertilizers , Mumbai , India RCF audio , an Italian pro audio manufacturer Other [ edit ] Ratchet & Clank Future: Tools of Destruction ,
339-419: A Labour dominance of Welsh politics that continued into the 21st century. After economic growth in the first two decades of the 20th century, Wales's staple industries endured a prolonged slump from the early 1920s to the late 1930s, leading to widespread unemployment and poverty. For the first time in centuries, the population of Wales went into decline; unemployment reduced only with the production demands of
452-421: A Welsh constituency at Westminster. Yet by 1906, industrial dissension and political militancy had begun to undermine Liberal consensus in the southern coalfields. In 1916, David Lloyd George became the first Welshman to become Prime Minister of Britain. In December 1918, Lloyd George was re-elected as the head of a Conservative-dominated coalition government, and his poor handling of the 1919 coal miners' strike
565-513: A combination of aluminum oxide (Al 2 O 3 ) and silicon dioxide (SiO 2 ), usually in a weight ratio 50:50 (see also VDI 3469 Parts 1 and 5, as well as TRGS 521). Products made of alumino silicate wool are generally used at application temperatures of greater than 900 °C for equipment that operates intermittently and in critical application conditions (see Technical Rules TRGS 619). Polycrystalline wool consists of fibers that contain aluminum oxide (Al 2 O 3 ) at greater than 70 percent of
678-476: A combination of calcium oxide (CaO−), magnesium oxide (MgO−), and silicon dioxide (SiO 2 ). Products made from AES wool are generally used in equipment that continuously operates and in domestic appliances. Some formulations of AES wool are bio-soluble, meaning they dissolve in bodily fluids within a few weeks and are quickly cleared from the lungs. Alumino silicate wool, also known as refractory ceramic fiber (RCF), consists of amorphous fibers produced by melting
791-732: A feat with neither precedent nor successor." Owain Gwynedd (1100–1170) of the Aberffraw line was the first Welsh ruler to use the title princeps Wallensium (prince of the Welsh), a title of substance given his victory on the Berwyn range , according to Davies. During this time, between 1053 and 1063, Wales lacked any internal strife and was at peace. Within four years of the Battle of Hastings (1066), England had been completely subjugated by
904-494: A good mechanical structure to hold the plant stable. The naturally high pH of mineral wool makes them initially unsuitable to plant growth and requires "conditioning" to produce a wool with an appropriate, stable pH. Conditioning methods include pre-soaking mineral wool in a nutrient solution adjusted to pH 5.5 until it stops bubbling . High-temperature mineral wool is used primarily for insulation and lining of industrial furnaces and foundries to improve efficiency and safety. It
1017-689: A legal unit in its own right, although it remains part of the single jurisdiction of England and Wales . The Senedd has the authority to draft and approve laws outside of the UK Parliamentary system to meet the specific needs of Wales. Under powers approved by a referendum held in March 2011, it is empowered to pass primary legislation, at the time referred to as an Act of the National Assembly for Wales but now known as an Act of Senedd Cymru in relation to twenty subjects listed in
1130-464: A series of castles: Beaumaris , Caernarfon , Harlech and Conwy . His son, the future Edward II , was born at Caernarfon in 1284. He became the first English prince of Wales in 1301, which at the time provided an income from northwest Wales known as the Principality of Wales . After the failed revolt in 1294–1295 of Madog ap Llywelyn – who styled himself Prince of Wales in
1243-465: A strong stream of air across a falling flow of liquid iron slag which was similar to the natural occurrence of fine strands of volcanic slag from Kilauea called Pele's hair created by strong winds blowing apart the slag during an eruption. According to a mineral wool manufacturer, the first mineral wool intended for high-temperature applications was invented in the United States in 1942 but
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#17327874920461356-620: A system of government with a separate executive, the Welsh Government, drawn from and accountable to the legislature, the National Assembly. Following a successful referendum in 2011, the National Assembly was empowered to make laws, known as Acts of the Assembly, on all matters in devolved subject areas, without requiring the UK Parliament's approval of legislative competence. It also gained powers to raise taxes. In May 2020,
1469-533: A varying degree and (since 2011) Welsh is the only official ( de jure ) language in any part of Great Britain. Wales is a country that is part of the sovereign state of the United Kingdom. ISO 3166-2:GB formerly defined Wales as a principality, with England and Scotland defined as countries and Northern Ireland as a province. However, this definition was raised in the Welsh Assembly in 2010 and
1582-589: A victory for the Celtic Britons at Badon Hill against the Saxons, which was attributed to Arthur by Nennius . Having lost much of what is now the West Midlands to Mercia in the 6th and early 7th centuries, a resurgent late-7th-century Powys checked Mercian advances. Æthelbald of Mercia , looking to defend recently acquired lands, had built Wat's Dyke . According to Davies, this had been with
1695-774: A video game Revolving credit facility Racing Club de France , an omnisport club in Paris Russian Curling Federation, a member of the World Curling Federation Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title RCF . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=RCF&oldid=1218412656 " Category : Disambiguation pages Hidden categories: Short description
1808-599: Is Cymry , and Cymru is the Welsh name for Wales. These words (both of which are pronounced [ˈkəm.rɨ] ) are descended from the Brythonic word combrogi , meaning "fellow-countrymen", and probably came into use before the 7th century. In literature, they could be spelt Kymry or Cymry , regardless of whether it referred to the people or their homeland. The Latinised forms of these names, Cambrian , Cambric and Cambria , survive as names such as
1921-502: Is a European Union regulation of 18 December 2006. REACH addresses the production and use of chemical substances, and their potential impacts on both human health and the environment. A Substance Information Exchange Forum (SIEF) has been set up for several types of mineral wool. AES, ASW and PCW have been registered before the first deadline of 1 December 2010 and can, therefore, be used on the European market. On 13 January 2010, some of
2034-521: Is a generally mountainous country on the western side of central southern Great Britain. It is about 170 miles (270 km) north to south. The oft-quoted " size of Wales " is about 20,779 km (8,023 sq mi). Wales is bordered by England to the east and by sea in all other directions: the Irish Sea to the north and west, St George's Channel and the Celtic Sea to the southwest and
2147-426: Is also used to prevent the spread of fire. The use of high-temperature mineral wool enables a more lightweight construction of industrial furnaces and other technical equipment as compared to other methods such as fire bricks, due to its high heat resistance capabilities per weight, but has the disadvantage of being more expensive than other methods. The International Agency for Research on Cancer (IARC) reviewed
2260-489: Is coal mining which became the industry synonymous with Wales and its people. Initially, coal seams were exploited to provide energy for local metal industries but, with the opening of canal systems and later the railways, Welsh coal mining saw an explosion in demand. As the South Wales Coalfield was exploited, Cardiff, Swansea, Penarth and Barry grew as world exporters of coal. By its height in 1913, Wales
2373-503: Is contrary to the REACH procedure intended. Aside from this situation, concerns raised during the two consultation periods remain valid. Regardless of the concerns raised, the inclusion of a substance in the candidate list triggers immediately the following legal obligations of manufacturers, importers and suppliers of articles containing that substance in a concentration above 0.1% (w/w): Amorphous high-temperature mineral wool (AES and ASW)
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#17327874920462486-416: Is costly to produce and has limited availability, it is almost exclusively used in high-temperature industrial applications and processes. Classification temperature is the temperature at which a certain amount of linear contraction (usually two to four percent) is not exceeded after a 24-hour heat treatment in an electrically heated laboratory oven in a neutral atmosphere. Depending on the type of product,
2599-461: Is described as a country rather than a principality.' In the House of Commons – the 650-member lower house of the UK Parliament – there are 32 members of Parliament (MPs) who represent Welsh constituencies . At the 2024 general election , 27 Labour and Labour Co-op MPs were elected, along with 4 Plaid Cymru MPs and 1 Liberal Democrat MP from Wales. The Wales Office is a department of
2712-705: Is different from Wikidata All article disambiguation pages All disambiguation pages High temperature insulation wool Applications of mineral wool include thermal insulation (as both structural insulation and pipe insulation ), filtration , soundproofing , and hydroponic growth medium. Mineral wool is also known as mineral cotton , mineral fiber , man-made mineral fiber (MMMF), and man-made vitreous fiber (MMVF). Specific mineral wool products are stone wool and slag wool . Europe also includes glass wool which, together with ceramic fiber, are entirely artificial fibers that can be made into different shapes and are spiky to touch. Slag wool
2825-458: Is largely mountainous with its higher peaks in the north and central areas, including Snowdon ( Yr Wyddfa ), its highest summit. The country lies within the north temperate zone and has a changeable, maritime climate . Its capital and largest city is Cardiff . A distinct Welsh culture emerged among the Celtic Britons after the Roman withdrawal from Britain in the 5th century, and Wales
2938-471: Is produced from a molten glass stream which is aerosolized by a jet of high-pressure air or by letting the stream impinge onto spinning wheels. The droplets are drawn into fibers; the mass of both fibers and remaining droplets cool very rapidly so that no crystalline phases may form. When amorphous high-temperature mineral wool is installed and used in high-temperature applications such as industrial furnaces, at least one face may be exposed to conditions causing
3051-416: Is the dominant language in parts of the north and west , with a total of 538,300 Welsh speakers across the entire country. Wales has four UNESCO world heritage sites , of which three are in the north. The English words "Wales" and "Welsh" derive from the same Old English root (singular Wealh , plural Wēalas ), a descendant of Proto-Germanic * Walhaz , which was itself derived from
3164-443: Is typically 100 °C to 150 °C below the classification temperature. Products made of polycrystalline wool can generally be used up to the classification temperature. There are several types of high-temperature mineral wool made from different types of minerals. The mineral chosen results in different material properties and classification temperatures. AES wool consists of amorphous glass fibers that are produced by melting
3277-511: The Aberffraw dynasty from Gwynedd and Powys and then codified Welsh law in the 940s. Gruffydd ap Llywelyn was the only ruler to unite all of Wales under his rule, described by one chronicler after his death as king of Wales . In 1055 Gruffydd ap Llywelyn killed his rival Gruffydd ap Rhydderch in battle and recaptured Deheubarth . Originally king of Gwynedd, by 1057 he was ruler of Wales and had annexed parts of England around
3390-541: The Cambrian Mountains and the Cambrian geological period. Wales has been inhabited by modern humans for at least 29,000 years. Continuous human habitation dates from the end of the last ice age , between 12,000 and 10,000 years before present (BP) , when Mesolithic hunter-gatherers from Central Europe began to migrate to Great Britain. At that time, sea levels were much lower than today. Wales
3503-617: The Fifteen Tribes of Wales . The 400-year period following the collapse of Roman rule is the most difficult to interpret in the history of Wales. After the Roman departure in AD 410, much of the lowlands of Britain to the east and south-east was overrun by various Germanic peoples , commonly known as Anglo-Saxons. Some have theorized that the cultural dominance of the Anglo-Saxons was due to apartheid-like social conditions in which
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3616-787: The Government of Wales Act 2006 such as health and education. Through this primary legislation, the Welsh Government can then also enact more specific subordinate legislation . Wales is served by four regional police forces: Dyfed-Powys Police , Gwent Police , North Wales Police , and South Wales Police . There are five prisons in Wales : four in the southern half of the country, and one in Wrexham . Wales has no women's prisons: female inmates are imprisoned in England. Wales
3729-558: The Normans . William I of England established a series of lordships, allocated to his most powerful warriors, along the Welsh border, their boundaries fixed only to the east (where they met other feudal properties inside England). Starting in the 1070s, these lords began conquering land in southern and eastern Wales, west of the River Wye . The frontier region, and any English-held lordships in Wales, became known as Marchia Wallie ,
3842-552: The Penmachno Document – and the rising of Llywelyn Bren (1316), the last uprising was led by Owain Glyndŵr , against Henry IV of England . In 1404, Owain was crowned prince of Wales in the presence of emissaries from France, Spain (Castille) and Scotland. Glyndŵr went on to hold parliamentary assemblies at several Welsh towns, including a Welsh parliament ( Welsh : senedd ) at Machynlleth . The rebellion
3955-665: The Second World War . The war saw Welsh servicemen and women fight in all major theatres, with some 15,000 of them killed. Bombing raids brought high loss of life as the German Air Force targeted the docks at Swansea , Cardiff and Pembroke . After 1943, 10 per cent of Welsh conscripts aged 18 were sent to work in the coal mines, where there were labour shortages; they became known as Bevin Boys . Pacifist numbers during both World Wars were fairly low, especially in
4068-617: The United Kingdom (green) Wales ( Welsh : Cymru [ˈkəmrɨ] ) is a country that is part of the United Kingdom . It is bordered by the Irish Sea to the north and west, England to the east , the Bristol Channel to the south, and the Celtic Sea to the south-west. As of 2021 , it had a population of 3.2 million. It has a total area of 21,218 square kilometres (8,192 sq mi) and over 2,700 kilometres (1,680 mi) of coastline . It
4181-686: The Welsh Marches , in which the Marcher lords were subject to neither English nor Welsh law . The extent of the March varied as the fortunes of the Marcher lords and the Welsh princes ebbed and flowed. Owain Gwynedd 's grandson Llywelyn Fawr (the Great, 1173–1240), received the fealty of other Welsh lords in 1216 at the council at Aberdyfi , becoming in effect the first prince of Wales . His grandson Llywelyn ap Gruffudd secured
4294-494: The automotive industry, as a filtering medium, and as a growth medium in hydroponics . Mineral fibers are produced in the same way, without binder. The fiber as such is used as a raw material for its reinforcing purposes in various applications, such as friction materials, gaskets, plastics, and coatings . Mineral wool products can be engineered to hold large quantities of water and air that aid root growth and nutrient uptake in hydroponics ; their fibrous nature also provides
4407-514: The carcinogenicity of man-made mineral fibers in October 2002. The IARC Monograph's working group concluded only the more biopersistent materials remain classified by IARC as "possibly carcinogenic to humans" ( Group 2B ). These include refractory ceramic fibers, which are used industrially as insulation in high-temperature environments such as blast furnaces , and certain special-purpose glass wools not used as insulating materials. In contrast,
4520-567: The 18th century, lawyers, doctors, estate agents and government officials formed a bourgeoisie with sizeable houses. In the late 18th century, slate quarrying began to expand rapidly, most notably in North Wales. The Penrhyn quarry , opened in 1770 by Richard Pennant, 1st Baron Penrhyn , was employing 15,000 men by the late 19th century, and along with Dinorwic quarry , it dominated the Welsh slate trade. Although slate quarrying has been described as "the most Welsh of Welsh industries", it
4633-718: The Britons were at a disadvantage. By AD 500 the land that would become Wales had divided into a number of kingdoms free from Anglo-Saxon rule. The kingdoms of Gwynedd , Powys , Dyfed , Caredigion , Morgannwg , the Ystrad Tywi , and Gwent emerged as independent Welsh successor states . Archaeological evidence, in the Low Countries and what was to become England, shows early Anglo-Saxon migration to Great Britain reversed between 500 and 550, which concurs with Frankish chronicles. John Davies notes this as consistent with
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4746-718: The Celtic languages arrived in Britain around 600 BCE. The Brythonic languages ceased to be spoken in England and were replaced by the English language, a Germanic language which arrived in Wales around the end of the eighth century due to the defeat of the Kingdom of Powys . The Bible translations into Welsh and the Protestant Reformation , which encouraged use of the vernacular in religious services, helped
4859-471: The Empire. Further Roman influence came through the spread of Christianity, which gained many followers when Christians were allowed to worship freely; state persecution ceased in the 4th century, as a result of Constantine the Great issuing an edict of toleration in 313. Early historians, including the 6th-century cleric Gildas , have noted 383 as a significant point in Welsh history. In that year,
4972-750: The English Crown, separate from England but under the same monarch. The king ruled directly in two areas: the Statute divided the north and delegated administrative duties to the Justice of Chester and Justiciar of North Wales , and further south in western Wales the King's authority was delegated to the Justiciar of South Wales . The existing royal lordships of Montgomery and Builth Wells remained unchanged. To maintain his dominance, Edward constructed
5085-693: The Late Bronze Age as part of a maritime trading-networked culture that included other Celtic nations . This "Atlantic-Celtic" view is opposed by others who hold that the Celtic languages derive their origins from the more easterly Hallstatt culture . By the time of the Roman invasion of Britain the area of modern Wales had been divided among the tribes of the Deceangli (north-east), Ordovices (north-west), Demetae (south-west), Silures (south-east), and Cornovii (east). The Roman conquest of Wales began in AD 48 and took 30 years to complete;
5198-523: The National Assembly was renamed "Senedd Cymru" or "the Welsh Parliament", commonly known as the Senedd in both English and Welsh. Devolved areas of responsibility include agriculture, economic development, education, health, housing, local government, social services, tourism, transport and the Welsh language. The Welsh Government also promotes Welsh interests abroad. By tradition, Welsh Law
5311-608: The Norsemen occupying Northumbria to conquer the north. This alliance later broke down and Anarawd came to an agreement with Alfred , king of Wessex , with whom he fought against the west Welsh. According to Annales Cambriae , in 894, "Anarawd came with the Angles and laid waste to Ceredigion and Ystrad Tywi ." The southern and eastern parts of Great Britain lost to English settlement became known in Welsh as Lloegyr (Modern Welsh Lloegr ), which may have referred to
5424-510: The Regulation (CE) n°790/2009 does not classify mineral wool fibers as a dangerous substance if they fulfil criteria defined in its Note Q. The European Certification Board for mineral wool products, EUCEB, certify mineral wool products made of fibers fulfilling Note Q ensuring that they have a low bio persistence and so that they are quickly removed from the lung. The certification is based on independent experts' advice and regular control of
5537-659: The Roman general Magnus Maximus , or Macsen Wledig, stripped Britain of troops to launch a successful bid for imperial power, continuing to rule Britain from Gaul as emperor, and transferring power to local leaders. The earliest Welsh genealogies cite Maximus as the founder of several royal dynasties, and as the father of the Welsh Nation. He is given as the ancestor of a Welsh king on the Pillar of Eliseg , erected nearly 500 years after he left Britain, and he figures in lists of
5650-493: The Romans, Caerwent , is in south east Wales. Both Caerwent and Carmarthen , also in southern Wales, became Roman civitates . Wales had a rich mineral wealth. The Romans used their engineering technology to extract large amounts of gold, copper, and lead, as well as lesser amounts of zinc and silver. No significant industries were located in Wales in this time; this was largely a matter of circumstance as Wales had none of
5763-546: The Second World War, which was seen as a fight against fascism . Plaid Cymru was formed in 1925, seeking greater autonomy or independence from the rest of the UK. The term " England and Wales " became common for describing the area to which English law applied, and in 1955 Cardiff was proclaimed as Wales's capital. Cymdeithas yr Iaith Gymraeg (The Welsh Language Society) was formed in 1962, in response to fears that
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#17327874920465876-624: The UK government responsible for Wales, whose minister, the Secretary of State for Wales (Welsh secretary), sits in the UK cabinet . Wales has a devolved , unicameral legislature known as the Senedd (Senedd Cymru – Welsh Parliament) which holds devolved powers from the UK Parliament via a reserved powers model. For the purposes of local government , Wales has been divided into 22 council areas since 1996. These "principal areas" are responsible for
5989-620: The agreement of king Elisedd ap Gwylog of Powys, as this boundary, extending north from the valley of the River Severn to the Dee estuary, gave him Oswestry . Another theory, after carbon dating placed the dyke's existence 300 years earlier, is that it was built by the post-Roman rulers of Wroxeter . King Offa of Mercia seems to have continued this initiative when he created a larger earthwork, now known as Offa's Dyke ( Clawdd Offa ). Davies wrote of Cyril Fox 's study of Offa's Dyke: "In
6102-514: The aluminosilicate refractory ceramic fibers and zirconia aluminosilicate refractory ceramic fibers have been included in the candidate list of Substances of Very High Concern . In response to concerns raised with the definition and the dossier two additional dossiers were posted on the ECHA website for consultation and resulted in two additional entries on the candidate list. This actual (having four entries for one substance/group of substances) situation
6215-413: The border. He ruled Wales with no internal battles. His territories were again divided into the traditional kingdoms. John Davies states that Gruffydd was "the only Welsh king ever to rule over the entire territory of Wales... Thus, from about 1057 until his death in 1063, the whole of Wales recognised the kingship of Gruffydd ap Llywelyn . For about seven brief years, Wales was one, under one ruler,
6328-457: The chemical composition. Due to the mechanical effect of fibers, mineral wool products may cause temporary skin itching. To diminish this and to avoid unnecessary exposure to mineral wool dust, information on good practices is available on the packaging of mineral wool products with pictograms or sentences. Safe Use Instruction Sheets similar to Safety data sheet are also available from each producer. People can be exposed to mineral wool fibers in
6441-540: The country from an agricultural society into an industrial one; the South Wales Coalfield 's exploitation caused a rapid expansion of Wales's population. Two-thirds of the population live in South Wales , including Cardiff, Swansea , Newport , and the nearby valleys . The eastern region of North Wales has about a sixth of the overall population, with Wrexham being the largest northern city. The remaining parts of Wales are sparsely populated . Since decline of
6554-432: The country's traditional extractive and heavy industries, the public sector , light and service industries, and tourism play major roles in its economy . Agriculture in Wales is largely livestock-based, making Wales a net exporter of animal produce, contributing towards national agricultural self-sufficiency . Both Welsh and English are official languages . A majority of the population of Wales speaks English. Welsh
6667-418: The creation of a Welsh assembly with an 80 per cent majority. In 1997, a second referendum on the same issue secured a very narrow majority (50.3 per cent). The National Assembly for Wales ( Cynulliad Cenedlaethol Cymru ) was set up in 1999 (under the Government of Wales Act 1998 ) with the power to determine how Wales's central government budget is spent and administered, although the UK Parliament reserved
6780-496: The dominant source of wealth. The emerging industrial period saw the development of copper smelting in the Swansea area. With access to local coal deposits and a harbour that connected it with Cornwall's copper mines in the south and the large copper deposits at Parys Mountain on Anglesey, Swansea developed into the world's major centre for non-ferrous metal smelting in the 19th century. The second metal industry to expand in Wales
6893-429: The effects of a sufficiently hot fire, the fire resistance of fiberglass , stone wool, and ceramic fibers makes them common building materials when passive fire protection is required, being used as spray fireproofing , in stud cavities in drywall assemblies and as packing materials in firestops . Other uses are in resin bonded panels , as filler in compounds for gaskets , in brake pads , in plastics in
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#17327874920467006-457: The end of the 1960s, the policy of bringing businesses into disadvantaged areas of Wales through financial incentives had proven very successful in diversifying the industrial economy. This policy, begun in 1934, was enhanced by the construction of industrial estates and improvements in transport communications, most notably the M4 motorway linking south Wales directly to London. It was believed that
7119-550: The fibers to partially devitrify. Depending on the chemical composition of the glassy fiber and the time and temperature to which the materials are exposed, different stable crystalline phases may form. In after-use high-temperature mineral wool crystalline silica crystals are embedded in a matrix composed of other crystals and glasses. Experimental results on the biological activity of after-use high-temperature mineral wool have not demonstrated any hazardous activity that could be related to any form of silica they may contain. Due to
7232-466: The first written evidence of the use of Cymru and y Cymry is found in a praise poem to Cadwallon ap Cadfan ( Moliant Cadwallon , by Afan Ferddig ) c. 633 . In Armes Prydein , believed to be written around 930–942, the words Cymry and Cymro are used as often as 15 times. However, from the Anglo-Saxon settlement onwards, the people gradually begin to adopt
7345-450: The forests to establish pasture and to cultivate the land, developed new technologies such as ceramics and textile production, and built cromlechs such as Pentre Ifan , Bryn Celli Ddu , and Parc Cwm long cairn between about 5,800 BP and 5,500 BP. Over the following centuries they assimilated immigrants and adopted ideas from Bronze Age and Iron Age Celtic cultures. Some historians, such as John T. Koch , consider Wales in
7458-452: The foundations for stable economic growth had been firmly established in Wales during this period, but this was shown to be optimistic after the recession of the early 1980s saw the collapse of much of the manufacturing base that had been built over the preceding forty years. The Welsh Language Act 1967 repealed a section of the Wales and Berwick Act and thus "Wales" was no longer part of
7571-751: The highest court of first instance as well as an appellate court . The three divisions are the Court of Appeal , the High Court of Justice , and the Crown Court . Minor cases are heard by magistrates' courts or the County Court . In 2007 the Wales and Cheshire Region (known as the Wales and Cheshire Circuit before 2005) came to an end when Cheshire was attached to the North-Western England Region. From that point, Wales became
7684-481: The increased diversity of the Welsh economy. Population growth however outpaced economic growth and the standard of living dropped. Prior to the Industrial Revolution in Wales , there were small-scale industries scattered throughout Wales. These ranged from those connected to agriculture, such as milling and the manufacture of woollen textiles , through to mining and quarrying. Agriculture remained
7797-587: The intention of recognizing that the River Wye and its traffic belonged to the kingdom of Gwent." However, Fox's interpretations of both the length and purpose of the Dyke have been questioned by more recent research. In 853, the Vikings raided Anglesey , but in 856, Rhodri Mawr defeated and killed their leader, Gorm. The Celtic Britons of Wales made peace with the Vikings and Anarawd ap Rhodri allied with
7910-409: The kingdom of Mercia originally and which came to refer to England as a whole. The Germanic tribes who now dominated these lands were invariably called Saeson , meaning " Saxons ". The Anglo-Saxons called the Romano-British * Walha , meaning 'Romanised foreigner' or 'stranger'. The Welsh continued to call themselves Brythoniaid (Brythons or Britons) well into the Middle Ages , though
8023-407: The language might soon die out. Nationalist sentiment grew following the flooding of the Tryweryn valley in 1965 to create a reservoir to supply water to the English city of Liverpool . Although 35 of the 36 Welsh MPs voted against the bill (one abstained), Parliament passed the bill and the village of Capel Celyn was submerged, highlighting Wales's powerlessness in her own affairs in the face of
8136-419: The language survive after Welsh elites abandoned it in favour of English in the fifteenth and sixteenth centuries. Successive Welsh Language Acts, in 1942, 1967 and 1993 , improved the legal status of Welsh. The Welsh Language (Wales) Measure 2011 modernised the 1993 Welsh Language Act and gave Welsh an official status in Wales for the first time, a major landmark for the language. The Measure also created
8249-531: The large number English people living in Wales. After the Senedd and Elections (Wales) Act 2020 , the National Assembly was renamed " Senedd Cymru " in Welsh and the "Welsh Parliament" in English, which was seen as a better reflection of the body's expanded legislative powers. The Welsh language ( Welsh : Cymraeg ) is an Indo-European language of the Celtic family ; the most closely related languages are Cornish and Breton . Most linguists believe that
8362-507: The law making powers of the National Assembly it is now able to make laws, known as Acts of the Assembly, on all matters in devolved subject areas, without needing the UK Parliament's agreement. In the 2016 referendum , Wales voted in support of leaving the European Union, although demographic differences became evident. According to Danny Dorling , professor of geography at Oxford University, votes for Leave may have been boosted by
8475-624: The legal definition of England. This essentially defined Wales as a separate entity legally (but within the UK), for the first time since before the Laws in Wales Acts 1535 and 1542 which defined Wales as a part of the Kingdom of England. The Welsh Language Act 1967 also expanded areas where use of Welsh was permitted, including in some legal situations. In a referendum in 1979 , Wales voted against
8588-462: The legal system of England and Wales since 1536. English law is regarded as a common law system, with no major codification of the law and legal precedents are binding as opposed to persuasive. The court system is headed by the Supreme Court of the United Kingdom which is the highest court of appeal in the land for criminal and civil cases. The Senior Courts of England and Wales is
8701-594: The male population. Of these, roughly 35,000 were killed, with particularly heavy losses of Welsh forces at Mametz Wood on the Somme and the Battle of Passchendaele . The first quarter of the 20th century also saw a shift in the political landscape of Wales. Since 1865, the Liberal Party had held a parliamentary majority in Wales and, following the general election of 1906 , only one non-Liberal Member of Parliament, Keir Hardie of Merthyr Tydfil , represented
8814-458: The mineral kaolin . It was one of the first types of high-temperature mineral wool invented and has been used into the 21st century. It can withstand temperatures close to 1,650 °C (3,000 °F). Stone wool is a furnace product of molten rock at a temperature of about 1600 °C through which a stream of air or steam is blown. More advanced production techniques are based on spinning molten rock in high-speed spinning heads somewhat like
8927-642: The mineral wool non-degradability and potential health risks, substitute materials are being developed: hemp , flax , wool , wood , and cork insulations are the most prominent. Biodegradability and health profile are the main advantages of those materials. Their drawbacks when compared to mineral wool are their substantially lower mold resistance, higher combustibility , and slightly higher thermal conductivity (hemp insulation: 0.040 Wm k , mineral wool insulation: 0.030-0.045 Wm k ). Wales – in Europe (green & dark grey) – in
9040-437: The more commonly used vitreous fiber wools produced since 2000, including insulation glass wool, stone wool, and slag wool, are considered "not classifiable as to carcinogenicity in humans" ( Group 3 ). High bio soluble fibers are produced that do not cause damage to the human cell. These newer materials have been tested for carcinogenicity and most are found to be noncarcinogenic. IARC elected not to make an overall evaluation of
9153-480: The name Cymry over Brythoniad . From 800 onwards, a series of dynastic marriages led to Rhodri Mawr 's ( r. 844–77) inheritance of Gwynedd and Powys . His sons founded the three dynasties of Aberffraw for Gwynedd , Dinefwr for Deheubarth and Mathrafal for Powys . Rhodri 's grandson Hywel Dda (r. 900–50) founded Deheubarth out of his maternal and paternal inheritances of Dyfed and Seisyllwg in 930, ousted
9266-1072: The name of the Gauls known to the Romans as Volcae . This term was later used to refer indiscriminately to inhabitants of the Western Roman Empire . Anglo-Saxons came to use the term to refer to the Britons in particular; the plural form Wēalas evolved into the name for their territory, Wales. Historically in Britain , the words were not restricted to modern Wales or to the Welsh but were used to refer to anything that Anglo-Saxons associated with Britons, including other non-Germanic territories in Britain (e.g. Cornwall ) and places in Anglo-Saxon territory associated with Britons (e.g. Walworth in County Durham and Walton in West Yorkshire). The modern Welsh name for themselves
9379-476: The necessary materials in suitable combination, and the forested, mountainous countryside was not amenable to industrialisation. Latin became the official language of Wales, though the people continued to speak in Brythonic. While Romanisation was far from complete, the upper classes came to consider themselves Roman, particularly after the ruling of 212 that granted Roman citizenship to all free men throughout
9492-628: The newly developed fibers designed to be less bio persistent such as the alkaline earth silicate or high-alumina, low-silica wools. This decision was made in part because no human data were available, although such fibers that have been tested appear to have low carcinogenic potential in experimental animals, and because the Working Group had difficulty in categorizing these fibers into meaningful groups based on chemical composition. The European Regulation (CE) n° 1272/2008 on classification, labelling and packaging of substances and mixtures updated by
9605-568: The numerical superiority of English MPs in Parliament. Separatist groupings, such as the Free Wales Army and Mudiad Amddiffyn Cymru were formed, conducting campaigns from 1963. Prior to the investiture of Charles in 1969, these groups were responsible for a number of bomb attacks on infrastructure. At a by-election in 1966, Gwynfor Evans won the parliamentary seat of Carmarthen , Plaid Cymru's first Parliamentary seat. By
9718-625: The occupation lasted over 300 years. The campaigns of conquest were opposed by two native tribes: the Silures and the Ordovices . Caractacus or Caradog , leader of the Ordovices, had initial success in resisting Roman invasions of north Wales but was eventually defeated. Roman rule in Wales was a military occupation, save for the southern coastal region of south Wales , where there is a legacy of Romanisation. The only town in Wales founded by
9831-537: The planning of it, there was a degree of consultation with the kings of Powys and Gwent. On the Long Mountain near Trelystan , the dyke veers to the east, leaving the fertile slopes in the hands of the Welsh; near Rhiwabon , it was designed to ensure that Cadell ap Brochwel retained possession of the Fortress of Penygadden." And, for Gwent, Offa had the dyke built "on the eastern crest of the gorge, clearly with
9944-743: The post of Welsh Language Commissioner , replacing the Welsh Language Board. Following the referendum in 2011, the Official Languages Act became the first Welsh law to be created in 600 years, according to the First Minister at the time, Carwyn Jones . This law was passed by Welsh Assembly members (AMs) only and made Welsh an official language of the National Assembly. Starting in the 1960s, many road signs have been replaced by bilingual versions. Various public and private sector bodies have adopted bilingualism to
10057-441: The process used to produce cotton candy . The final product is a mass of fine, intertwined fibers with a typical diameter of 2 to 6 micrometers . Mineral wool may contain a binder , often a terpolymer , and an oil to reduce dusting. Though the individual fibers conduct heat very well, when pressed into rolls and sheets, their ability to partition air makes them excellent insulators and sound absorbers . Though not immune to
10170-526: The provision of all local government services. Following devolution in 1997, the Government of Wales Act 1998 created a Welsh devolved assembly, the National Assembly for Wales , with the power to determine how Wales's central government budget is spent and administered. Eight years later, the Government of Wales Act 2006 reformed the National Assembly for Wales and allowed further powers to be granted to it more easily. The Act also created
10283-475: The recognition of the title Prince of Wales from Henry III with the Treaty of Montgomery in 1267. Subsequent disputes, including the imprisonment of Llywelyn 's wife Eleanor , culminated in the first invasion by King Edward I of England . As a result of military defeat, the Treaty of Aberconwy exacted Llywelyn 's fealty to England in 1277. Peace was short-lived, and, with the 1282 Edwardian conquest ,
10396-406: The right to set limits on its powers. The Government of Wales Act 2006 (c 32) is an Act of the Parliament of the United Kingdom that reformed the National Assembly for Wales and allows further powers to be granted to it more easily. The Act creates a system of government with a separate executive drawn from and accountable to the legislature. Following a successful referendum in 2011 on extending
10509-399: The rule of the Welsh princes permanently ended. With Llywelyn 's death and his brother prince Dafydd 's execution, the few remaining Welsh lords did homage to Edward I of England . The Statute of Rhuddlan in 1284 provided the constitutional basis for a post-conquest government of the Principality of North Wales from 1284 until 1535/36. It defined Wales as "annexed and united" to
10622-611: The ruler. Other than in the Marches , where March law was imposed by the Marcher Lords, Welsh Law remained in force in Wales until the Statute of Rhuddlan in 1284. Edward I of England annexed the Principality of Wales following the death of Llywelyn ap Gruffudd , and Welsh Law was replaced for criminal cases under the Statute. Marcher Law and Welsh Law (for civil cases) remained in force until Henry VIII of England annexed
10735-551: The story of Cantre'r Gwaelod 's drowning and tales in the Mabinogion , of the waters between Wales and Ireland being narrower and shallower, may be distant folk memories of this time. Neolithic colonists integrated with the indigenous people, gradually changing their lifestyles from a nomadic life of hunting and gathering, to become settled farmers about 6,000 BP – the Neolithic Revolution . They cleared
10848-425: The then Counsel General for Wales , John Griffiths , stated, 'Principality is a misnomer and that Wales should properly be referred to as a country.' In 2011, ISO 3166-2:GB was updated and the term 'principality' was replaced with 'country'. UK Government toponymic guidelines state that, 'though there is a Prince of Wales, this role is deemed to be titular rather than exerting executive authority, and therefore Wales
10961-444: The throne of England from Richard III of England in 1485, uniting England and Wales under one royal house. The last remnants of Celtic-tradition Welsh law were abolished and replaced by English law by the Laws in Wales Acts 1535 and 1542 during the reign of Henry VII's son, Henry VIII . In the legal jurisdiction of England and Wales , Wales became unified with the kingdom of England; the " Principality of Wales " began to refer to
11074-407: The total materials and is produced by sol–gel method from aqueous spinning solutions. The water-soluble green fibers obtained as a precursor are crystallized by means of heat treatment. Polycrystalline wool is generally used at application temperatures greater than 1300 °C and in critical chemical and physical application conditions. Kaowool is a type of high-temperature mineral wool made from
11187-443: The value may not exceed two percent for boards and shaped products and four percent for mats and papers. The classification temperature is specified in 50 °C steps starting at 850 °C and up to 1600 °C. The classification temperature does not mean that the product can be used continuously at this temperature. In the field, the continuous application temperature of amorphous high-temperature mineral wool ( AES and ASW )
11300-504: The whole country, though it remained a "principality" only in a ceremonial sense. The Marcher lordships were abolished, and Wales began electing members of the Westminster parliament. In 1536 Wales had around 278,000 inhabitants, which increased to around 360,000 by 1620. This was primarily due to rural settlement, where animal farming was central to the Welsh economy. Increase in trade and increased economic stability occurred due to
11413-576: The whole of Wales under the Laws in Wales Acts 1535 and 1542 (often referred to as the Acts of Union of 1536 and 1543), after which English law applied to the whole of Wales. The Wales and Berwick Act 1746 provided that all laws that applied to England would automatically apply to Wales (and the Anglo-Scottish border town of Berwick ) unless the law explicitly stated otherwise; this Act was repealed with regard to Wales in 1967. English law has been
11526-579: The workplace by breathing them in, skin contact, and eye contact. The Occupational Safety and Health Administration (OSHA) has set the legal limit ( permissible exposure limit ) for mineral wool fiber exposure in the workplace as 15 mg/m total exposure and 5 mg/m respiratory exposure over an 8-hour workday. The National Institute for Occupational Safety and Health (NIOSH) has set a recommended exposure limit (REL) of 5 mg/m total exposure and 3 fibers per cm over an 8-hour workday. Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)
11639-532: Was annexed by England and incorporated within the English legal system under the Laws in Wales Acts 1535 and 1542 . Distinctive Welsh politics developed in the 19th century. Welsh Liberalism , exemplified in the early 20th century by David Lloyd George , was displaced by the growth of socialism and the Labour Party . Welsh national feeling grew over the century: a nationalist party, Plaid Cymru ,
11752-576: Was a key factor in destroying support for the Liberal party in south Wales. The industrial workers of Wales began shifting towards the Labour Party . When in 1908 the Miners' Federation of Great Britain became affiliated to the Labour Party, the four Labour candidates sponsored by miners were all elected as MPs. By 1922, half the Welsh seats at Westminster were held by Labour politicians—the start of
11865-467: Was briefly united under Gruffydd ap Llywelyn in 1055. After over 200 years of war, the conquest of Wales by King Edward I of England was completed by 1283, though Owain Glyndŵr led the Welsh Revolt against English rule in the early 15th century, and briefly re-established an independent Welsh state with its own national parliament ( Welsh : senedd ). In the 16th century the whole of Wales
11978-437: Was compiled during an assembly held at Whitland around 930 by Hywel Dda , king of most of Wales between 942 and his death in 950. The ' law of Hywel Dda ' ( Welsh : Cyfraith Hywel ), as it became known, codified the previously existing folk laws and legal customs that had evolved in Wales over centuries. Welsh Law emphasised the payment of compensation for a crime to the victim, or the victim's kin, rather than punishment by
12091-442: Was eventually defeated by 1412. Having failed Owain went into hiding and nothing was known of him after 1413. The penal laws against the Welsh of 1401–02 passed by the English parliament made the Welsh second-class citizens. With hopes of independence ended, there were no further wars or rebellions against English colonial rule and the laws remained on the statute books until 1624. Henry Tudor (born in Wales in 1457) seized
12204-546: Was first made in 1840 in Wales by Edward Parry, "but no effort appears to have been made to confine the wool after production; consequently it floated about the works with the slightest breeze, and became so injurious to the men that the process had to be abandoned". A method of making mineral wool was patented in the United States in 1870 by John Player and first produced commercially in 1871 at Georgsmarienhütte in Osnabrück Germany . The process involved blowing
12317-556: Was formed in 1925, and the Welsh Language Society in 1962. A governing system of Welsh devolution is employed in Wales, of which the most major step was the formation of the Senedd (Welsh Parliament, formerly the National Assembly for Wales) in 1998, responsible for a range of devolved policy matters . At the dawn of the Industrial Revolution , development of the mining and metallurgical industries transformed
12430-577: Was free of glaciers by about 10,250 BP, the warmer climate allowing the area to become heavily wooded. The post-glacial rise in sea level separated Wales and Ireland, forming the Irish Sea . By 8,000 BP the British Peninsula had become an island. By the beginning of the Neolithic ( c. 6,000 BP ) sea levels in the Bristol Channel were still about 33 feet (10 metres) lower than today. The historian John Davies theorised that
12543-436: Was iron smelting, and iron manufacturing became prevalent in both the north and the south of the country. In the north, John Wilkinson 's Ironworks at Bersham was a major centre, while in the south, at Merthyr Tydfil , the ironworks of Dowlais , Cyfarthfa , Plymouth and Penydarren became the most significant hub of iron manufacture in Wales. By the 1820s, south Wales produced 40 per cent of all Britain's pig iron . By
12656-422: Was not commercially viable until approximately 1953. More forms of mineral wool became available in the 1970s and 1980s. High-temperature mineral wool is a type of mineral wool created for use as high-temperature insulation and generally defined as being resistant to temperatures above 1,000 °C. This type of insulation is usually used in industrial furnaces and foundries. Because high-temperature mineral wool
12769-573: Was producing almost 61 million tons of coal. Historian Kenneth Morgan described Wales on the eve of the First World War as a "relatively placid, self-confident and successful nation". The output from the coalfields continued to increase, with the Rhondda Valley recording a peak of 9.6 million tons of coal extracted in 1913. The First World War (1914–1918) saw a total of 272,924 Welshmen under arms, representing 21.5 per cent of
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