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152 mines beginning with D, of 3568.

Mine	Region	Worked	Commodities
Dalbeath Colliery The Hill of Beath estate's 1886 sinkings that became the district's main producer and outlived the old pits by two decades.	Fife	1886/87–early 1930s	Coal
Daldowie Colliery An east Glasgow pit whose site carried a greyhound track for over sixty years.	Glasgow	1877–1924	Coal
Dale Head Copper Mine An eighteenth-century copper mine high among Dale Head Crags above the Newlands valley, with its hand-dressing floor left untouched since abandonment.	Cumbria	from c. 1700	Copper
Dalmellington Iron Works Once ran 14 blast furnaces producing 120,000 tons of pig iron a year from local ore and coal	East Ayrshire	1847–1921	Iron, Coal
Dalmeny No. 2 and 3 Pits The pits behind the Dalmeny Oil Works, now buried under an oil terminal and a Forth bridge approach road.	West Lothian	c. 1871–1914	Oil Shale
Dalquhandy Colliery A Coalburn colliery of up to 271 men whose ground was later dug out as the largest opencast coal site in Western Europe.	South Lanarkshire	c. 1890–c. 1922	Coal
Dalquharran Colliery Ayrshire's Girvan Valley pit of 1951 to 1977, whose closure threatened the village of Dailly and left polluted water running into the River Girvan.	South Ayrshire	1951–1977	Coal
Dalzell's Moor Row Mine An ironworks digging its own ore: the Maryport Hematite Iron Company worked this mine to feed its own furnaces.	Cumbria	From 1882–31 March 1926	Iron
Danebower Colliery A thin-seam upland colliery on the Dane whose stone ventilation chimney is one of only nine left in England.	Cheshire	c. 1780–1925	Coal
Danescombe Mine A Tamar valley copper mine that turned to arsenic, and whose crusher house is now a holiday let	Cornwall	Before 1837–after 1900	Copper, Arsenic
Danygraig Colliery Sixty years of small private mining under NCB licence, through fines, fire and changes of hands, on one Dulais Valley hillside.	Neath Port Talbot	December 1956–February 2016	Coal
Dare Colliery The other half of the Park and Dare, beside which the earliest houses of Cwmparc seem to have grown up.	Rhondda Cynon Taf	1865–1955 (merged with Parc)	Coal
Daren Colliery A Hughes Vein level at Trebanos, opened and reopened by four companies before the NCB worked it by the old stall system until 1964.	Neath Port Talbot	1906–17 October 1964	Coal
Darfield Main Colliery Flooded on purpose to kill a fire in 1872, it came back with a fan in place of its furnace and ran another 115 years.	South Yorkshire	1856 (sinking)–1989	Coal
Dark Hill Colliery David Mushet took the Dark Hill gale in 1841 to feed the experimental ironworks next door where his son Robert would later invent tungsten steel — the coal was never the point.	Gloucestershire	By 1813–c. 1914	Coal
Dark Lane Colliery Shropshire's 'Cage Pit', an early cage-winding colliery, where twelve fell to their deaths in 1862, the county's worst mining toll.	Shropshire	1850–c.1900 (pumping until 1911)	Coal, Ironstone
Darley Main Colliery G. Jarratt's colliery in Worsbrough Dale, south-east of Barnsley, where 75 died in 1849.	South Yorkshire	By 1843–1886	Coal
Darngavil Colliery A Greengairs colliery where one miner went down a flooding shaft alone to bring out seven men in 1920.	North Lanarkshire	by 1868	Coal, Ironstone
Darnley Lime Works Limestone leased here in 1610 and coal worked by 1615, with quarries, kilns and tramways running until the 1950s on ground now a country park.	Glasgow	By 1610–c. 1959	Limestone, Fireclay
Darran Colliery A pit thought safe enough for naked lights for forty years, until an explosion killed twenty-seven — five of them men who had gone in to fetch the others out.	Caerphilly	1868–1919	Coal
Darran Colliery, Risca A small Risca drift kept at work for the fireclay its owners' brickworks needed.	Caerphilly	c.1812–1942	Coal, Fireclay
Darrell Colliery A Dulais Valley level worked by hand with two horses, Sandy and Blackie, whose ground was later taken by opencast.	Neath Port Talbot	1976–1 April 1995	Coal
Darton Colliery A colliery near Barnsley whose workforce rose from a few dozen to over nine hundred by the 1930s before passing to the National Coal Board in 1947.	South Yorkshire	By 1890s–August 1948	Coal
Daw Mill Colliery Once Britain's biggest coal producer; closed after the worst underground fire in the UK in 30 years	Warwickshire	1956 (sinking)–2013	Coal
Dawdon Colliery Escaped the mass-casualty underground disasters that struck its neighbours at Seaham and Easington — but not the Luftwaffe, which killed 12 people in the colliery village in a single night in August 1940.	County Durham	From March 1900 (sinking)–25 July 1991	Coal
Dayhouse Quarry A ballast quarry served by the last stub of the Wye Valley Railway, flooded into one of Britain's deepest inland dive sites.	Gloucestershire	ended by 1996	Limestone
De Lank Quarries If a Victorian structure had to stand against the open Atlantic — Eddystone, Bishop Rock — the granite was likely cut here.	Cornwall	19th century–Still active	Granite
De Winton Colliery A short-lived Aberdare pit remembered locally as 'Pwll Spite', on the ground of the town's hospital.	Rhondda Cynon Taf	1880–1901	Coal
Deaf Hill Colliery Ninety years of one colliery's output returns, showing the coal trade change around a pit that never moved.	County Durham	1877–1967	Coal
Dean and Chapter Colliery The colliery's own streets were named after the great engineers of the industrial age — George Stephenson, Michael Faraday — for a community that dug the coal those very engineers' furnaces and engines depended on.	County Durham	1904–15 January 1966	Coal
Dean Lane Colliery Bristol's largest pit until 1906, now a park in Bedminster.	Bristol	to 1906	Coal
Deane Colliery A Bolton pit known by three names, the last of them taken from the pub across the road.	Greater Manchester	1868–October 1960	Coal
Deans No. 5 Mine A mine driven through barren rock to reach shale lying beneath what became the new town of Livingston.	West Lothian	c. 1908–1931	Oil Shale
Deans No. 7 Mine A Livingston shale mine that fought thin seams, faults and water through the 1920s.	West Lothian	By 1915–1931	Oil Shale
Dearham Colliery The pits around Dearham near Maryport, where a winding rope broke in 1844 and killed two men and three boys.	Cumbria	By 1837–1894	Coal
Dearne Valley Colliery A drift mine that outlasted most of the Dearne Valley's deep pits, working until 1991.	South Yorkshire	1900 or 1903–March 1991	Coal
Dechmont Colliery Archibald Russell's colliery at Flemington, Cambuslang, with a shaft 180 fathoms deep and over 1,300 people at work across two sites in 1920.	South Lanarkshire	1890–1930 to 1932	Coal
Deckham Hall Colliery A Gateshead landsale pit given up in 1893 because none of its four seams could be worked at a profit.	Tyne and Wear	By 1874–December 1893	Coal
Deep Duffryn Colliery John Nixon's proving ground: his patent ventilator replaced the furnace here, and this is where he first worked the longwall system in the South Wales coalfield.	Rhondda Cynon Taf	From February 1850 (sinking)–21 September 1979 (NMRS gives 1981)	Coal
Deep Navigation Colliery David Davies sent his own people abroad to study how continental European miners washed up after a shift — the result, opened in 1913, was the first pithead baths built anywhere in South Wales.	Merthyr Tydfil	From October 1873–29 March 1991	Coal
Deep Pit, Nantyglo One of Crawshay Bailey's Nantyglo pits, where a father and two sons died in an explosion fired at a candle.	Blaenau Gwent	Early 1830s–before 1920	Coal
Deer Hills Baryte Mine A late, short-lived and ultimately unsuccessful attempt to extend the Caldbeck Fells' baryte-mining boom onto new ground beyond the exhausted Potts Gill workings.	Cumbria	From 1961–after 1961	Barite
Deerplay Colliery Its drift water turned the River Irwell orange from its very source until the Coal Authority built reed beds on the pit site.	Lancashire	1894–1968	Coal
Deeside and Moelfferna Quarries In 1885 it sent Guinness a slate cistern fifty feet long, thought to be one of the largest stone tanks ever built.	Denbighshire	1870–1947	Slate
Delabole Slate Quarry Seven hundred years of continuous working in a single hole, once claimed as the deepest man-made pit on earth	Cornwall	from From mid-1200s	Slate
Delaval Benwell Colliery A Scotswood pit and brickworks that made five million firebricks in 1900, with its drift mouth still on Scotswood Road.	Tyne and Wear	1850s–15 May 1901	Coal, Fireclay
Delves Colliery A Consett Iron Company pit first worked by Mormons, which named it the Latter Day Saints pit.	County Durham	1847–1963 (Saints Pit closed 1913)	Coal
Denaby Main Colliery Called "the worst village in England" by a magazine in 1899, and the pit whose owners evicted 750 tenant families during the Bag Muck Strike three years later.	South Yorkshire	1863–1968	Coal
Denby Grange Colliery The Lister Kaye family's estate colliery near Wakefield, whose Caphouse pit is now the National Coal Mining Museum for England.	West Yorkshire	c. 1790–1991	Coal
Denby Hall Colliery A Drury-Lowe colliery at Denby, sunk in 1875 for the Piper seam, merged with the neighbouring Denby Drury-Lowe pit in 1967 and closed in 1968.	Derbyshire	1875–1968	Coal
Denend Colliery Two shafts at the head of Carden Den, worked independently of the two collieries either side of them, and gone before the Fife boom that swallowed the district.	Fife	Probably 1860s–1895	Coal
Denner Hill Quarries Quarrymen found this exceptionally hard building stone by probing the ground with metal rods called 'snipers' — a trade that stretches from 18th-century stone-cutters' leases to a last mason still working it in 1950.	Buckinghamshire	19th–c. 1950	Sarsen Stone
Derry Colliery, Coalisland Coal from a townland on the edge of Coalisland, raised by a horse gin in the 1830s and shipped by lighter to Belfast — and, in the end, the last coal mine in Ulster.	County Tyrone	By 1834–1970	Coal, Fireclay
Derrynoose Lead Mine One of at least 57 recorded shafts and adits once worked across the little-known South Armagh-Monaghan lead mining district -- a whole 19th-century industry now reduced, at Derrynoose itself, to 13 shafts and a spoil heap on a modern contamination survey.	County Armagh	Mid 19th century–by 1842	Lead
Derwent Colliery A Consett Iron Company pit where the Hutton seam lay barely fifty feet below the surface.	County Durham	1856–21 November 1964	Coal, Fireclay
Derwent Crook Colliery An old Low Fell pit whose boiler flew over its own engine-house in 1841.	Tyne and Wear	by 1746	Coal
Derwent Lead Mines Taylor's Shaft, sunk 250 m and pumped by 470 m of flat rods from waterwheels in the valley — the most complex such system left in England.	County Durham	By 1624–1980s	Lead, Fluorspar
Desborough Ironstone Quarries Northamptonshire ironstone workings linked by tramway to the county's ironworks.	Northamptonshire	1859–by late 1960s	Iron
Desford Colliery The most southerly deep pit of the Leicestershire coalfield, where an undermanager built the first hydraulic powered roof support out of a fire hydrant and three prototypes.	Leicestershire	1900 (coal from 1902)–10 February 1984	Coal
Devon Burra Burra A Whitchurch Down copper mine begun in 1851 as Wheal Gatepost after a copper-stained gatepost was found, and renamed after South Australia's Burra Burra.	Devon	from 1851	Copper
Devon Colliery Its 1864 Cornish pumping engine drew five tons of water a minute, and its beam engine house is one of only two left standing in Scotland.	Clackmannanshire	Early 19th century–1960	Coal
Devon Great Consols Once the largest copper mine in Europe and a major world arsenic source	Devon	1844–1903	Copper, Tin, Arsenic, Tungsten
Devon United Mine A dump in a wood on the Tavy gave Britain its first recorded specimen of parkerite, a rare nickel bismuth sulphide, in 2004.	Devon	From about 1820–1923	Copper, Arsenic, Tin, Tungsten
Dewley Pits The pits near Black Callerton where the young George Stephenson worked, now scheduled as rare 18th-century mining earthworks.	Tyne and Wear	17th century–19th century	Coal
Dewsbury Lane Colliery A small Ossett pit whose colliers paid for their own sick and accident club, and in 1871 had no accidents to pay for.	West Yorkshire	By 1856–1877	Coal
Dewshill Colliery A Coltness Iron Company pit on the Shotts moors whose bings still rise beside the M8.	North Lanarkshire	1896–1943	Coal
Dexter Colliery A shaft sunk to chase coal across a fault, whose ventilation troubles led to Daw Mill, once Britain's biggest coal producer.	Warwickshire	1927–1960 (coal)	Coal
Diamond Colliery An Ystradgynlais drift whose anthracite was so hard and clean it was said to rattle like china.	Powys	1874–1938	Coal, Anthracite
Diana Maria Mine A mine opened in 2017 to produce nothing but fluorite crystals for collectors	County Durham	2017 (opencast)–Still active	Fluorspar
Digby Colliery The Digby Colliery Company's original 1866 pit at Giltbrook, a small coal-and-bricks concern whose 1928 explosion inquest found men cutting coal without a flame lamp.	Nottinghamshire	1866–1934–1939	Coal
Diglake Colliery Seventy-two of the 77 men drowned here in 1895 are still in the workings, sealed in after three skeletons were found in 1932-33.	Staffordshire	1870 (earlier pit 1733 to c. 1850)–June 1905	Coal
Dillwyn Colliery An anthracite slant at Seven Sisters closed in 1966 after output per shift fell to barely half a ton, its men sent to Treforgan.	Neath Port Talbot	1884–April 1966	Coal
Dimple Mine A Matlock Bank lead mine that Farey recorded in 1809 as running the only mine steam-engine then working in Derbyshire.	Derbyshire	from Working by 1807-09	Lead
Dinas Colliery The Rhondda's first deep pit, sunk by Walter Coffin in 1812, and the scene of the valley's first major explosion in 1844 and of a far worse one in 1879 that killed sixty-three.	Rhondda Cynon Taf	From 1809–1893	Coal
Dinas Isha Colliery Worked by the Ely Rhondda Colliery Company for three decades, employing over 100 men at its early-1900s peak.	Rhondda Cynon Taf	1874–25 November 1911	Coal
Dinas Main Colliery A Gilfach Goch pit where an explosion on a pay Saturday in 1907 killed seven of the twelve men below.	Rhondda Cynon Taf	c. 1865–1907 (pit)	Coal
Ding Dong Mine Local legend held Ding Dong to be older than any Cornish mine but Dolcoath — supposedly worked since before the time of Christ — a claim that can be neither proven nor disproven, since the mine's documented history, though it stretches back to the reign of James I, simply doesn't reach far enough to settle the question either way.	Cornwall	documented from early 17th century–1928	Tin, Copper
Dinnington Colliery A church memorial in Dinnington names 74 men lost to this one colliery over its working life — though even that figure, researchers say, may not be the whole story.	South Yorkshire	1902 (sinking)–1992	Coal
Dinorwig Slate Quarry Dinorwig's 1909-10 safety record was serious enough to reach the House of Commons and to be cited in a national Royal Commission inquiry into North Wales slate quarrying — a rare case of a single quarry's own casualty figures driving genuinely national safety scrutiny.	Gwynedd	1787–1969	Slate
Diphwys Casson Quarry Known as the 'mam-chwarel' (mother quarry) of the entire Ffestiniog slate district.	Gwynedd	1760s (Methusalem Jones)–1925 (sources differ)	Slate
Dipton Colliery A John Bowes pit whose Delight Pit gave the colliery its other name.	County Durham	April 1855–November 1940	Coal
Dirtlow Rake Mine One of the South Pennines Orefield's important lead lodes near Castleton, documented almost continuously via the surviving Castleton Barmaster Books.	Derbyshire	at least 17th century–20th century	Copper, Lead, Silver, Zinc, Barite, Fluorspar
Dirty Red Soil Mine Even its own name reads like a piece of miners' shorthand -- 'dirty' most likely describing the poorer, more heavily contaminated ore this working produced compared to its cleaner-sounding neighbour, Great Red Soil.	Derbyshire	Later 18th century–19th century	Lead
Divethill Quarry One of the big Northumberland quarries eating into the Great Whin Sill, granted another 2.7 million tonnes in 2020 over the objections of three settlements.	Northumberland	to Still active	Whinstone
Doc Mine Outside its entrance lie genuine Bronze Age remains, while underground the mine itself is mostly a product of the 19th century -- a rare case at Alderley Edge of surface and subsurface evidence separated by millennia standing side by side.	Cheshire	19th century–1878	Copper
Dockra Ironstone Pit Barrmill's ironstone pit of 1896, twenty-two fathoms to the Dalry clayband, whose ore went by tramway to the Glengarnock furnaces and whose bing ended up in a naval munitions depot.	North Ayrshire	1896–1918 (or 1921)	Coal, Ironstone
Doddington Colliery One of north Northumberland's larger inland pits, finally given up in 1904 when faults cut off its coal.	Northumberland	By 1855–January 1904	Coal
Dodworth Colliery Six months after losing £2 million, its miners smashed the pit's output record in January 1979 — at 3.8 tonnes a man-shift against a national 2.2.	South Yorkshire	1850–1987	Coal
Dog Delf Colliery Ninety-four acres of thin irregular seam at Moseley Green that bankrupted at least one of its owners: "I expended £76 in surface equipment," Hodgkinson told the gaveller, eighteen months before he went under.	Gloucestershire	1872–1899 (gale forfeited)	Coal
Dolaucothi Gold Mines Only confirmed Roman gold mine in Britain; National Trust site	Carmarthenshire	c. 70 AD–1938	Gold
Dolcoath Mine Once the world's deepest tin mine, and Cornwall's biggest producer of black tin	Cornwall	1720s–1920	Tin, Copper, Arsenic, Silver
Dolfrwynog Mine Copper here was taken out of a peat bog as well as out of rock: the adjoining Turf Copper Mine, where copper-rich peat was cut, burnt and its ashes smelted, is unique in the British Isles.	Gwynedd	By 1824–1860s	Copper, Gold
Dolgoch Quarry Named after the Nant Dolgoch stream -- 'dol goch' means 'red meadow' in Welsh -- the quarry worked the same two slate veins as the much larger Bryn Eglwys Quarry barely a mile and a half away, and was twice revived by Bryn Eglwys's own idle workers during that quarry's later troubles.	Gwynedd	January 1868–April 1884	Slate
Dollar Mine A small Clackmannanshire mine that set a national record for a single coalface in 1962.	Clackmannanshire	1943–May 1973	Coal
Don Pedro Colliery A Normanton colliery named after the Emperor of Brazil, whose 1871 visit the town remembered in its pit's name.	West Yorkshire	1878–1912	Coal
Donibristle Colliery A Fife pit whose workings ran under a square mile of moss, until the moss came in.	Fife	—	Coal
Donisthorpe Colliery Britain’s Best Pit in 1951 and one of the last two collieries in the country still winding by steam when it shut in 1990 — with twenty-two new faces standing ready underground and only one of them started.	Leicestershire	1871–12 April 1990	Coal
Dorothea Quarry The last new Cornish beam engine ever built, bought by a Welsh slate quarry to keep a vertical vein dry	Gwynedd	1820s–1970	Slate
Double Arches Pit Opened in 1916 because the war cut off Belgian foundry sand — and it got its railway in 1919 because the quarry companies were banned from carting the sand by road.	Bedfordshire	1916–1985	Silica Sand
Douglas Bank Colliery A Wigan-coalfield pit sunk 737 yards, where shaft sinking twice killed five men, in 1865 and 1888.	Greater Manchester	1863–December 1920	Coal
Douglas Castle Colliery The Earl of Home's own decision to let coal be mined beside his family's castle, to give the district work during the Depression, is the direct reason that castle no longer stands.	South Lanarkshire	by the 1910s–1950s (precise date unrecorded)	Coal
Douglas Head Mine Two men and one owner who was also his own agent, on a headland the island had been quarrying since before it mined anything.	Isle of Man	Working by 1902–1902	Lead
Douglas Park Colliery A Bellshill pit of John Wilson's and then the Wilsons and Clyde company, where most recorded deaths came from falls at the face.	North Lanarkshire	By 1883–c. 1929	Coal
Doulting Quarry Two metres of oolite sitting straight on Carboniferous limestone with millions of years of missing rock between them — and the stone of Wells Cathedral’s west front.	Somerset	Roman–Still active	Limestone
Doura Colliery Doura coal went to Holyrood and Edinburgh Castle in Mary Queen of Scots’ time, and the name was a household word in Ayrshire for the quality of it.	North Ayrshire	By the 16th century–early 20th century	Coal, Fireclay
Dovegang Mine Dovegang's real historical significance lies underground and out of sight: the Longhead Sough, driven here in the 1630s by the same Dutch engineer who later drained the Fens, was the very first of the drainage soughs that went on to define Derbyshire lead mining for the next two centuries.	Derbyshire	By 1652–19th century	Lead
Doward Iron Mines Mined so long ago that the Wye tourists of the 18th century, who described everything else in the gorge, did not know there had been mines here.	Herefordshire	Possibly the Roman period–1917	Iron, Ochre
Dowgang Mine The hush that carries its name was already working in 1773, and nobody knows when it began.	Cumbria	By 1773–by 1902	Lead, Zinc
Dowlais Ironworks The world's largest iron producer by the 1840s under the Guest family, and one of the few Welsh ironworks to keep making steel until 1987.	Merthyr Tydfil	19 September 1759–1987 (steel production ended)	Iron, Coal
Dowlow Works One of three great limestone quarries sharing Sterndale Moor, still working after 125 years.	Derbyshire	1899–Still active	Limestone
Dowpot Syke and Guttergill Mine Two Alston Moor lead groves named in Greenwich Hospital estate papers of the 1730s, still listed together as one mine in 1888.	Cumbria	By 1735, possibly earlier–1892	Lead
Drakewalls Mine Worked from a medieval open cutting to deep stopes, it was among Cornwall's richest tin mines in the 1860s, and the scene of an 1866 union strike broken by troops.	Cornwall	Medieval–c. 1910	Tin, Copper, Arsenic, Tungsten
Dria Quarry A quarry with no dressing floor of its own, worked out of a cove now closed by landslips.	Cornwall	By the 1880s–early 1900s	Slate
Driggith Mine Caldbeck Fells lead/copper mine, most substantially worked from the 1820s, reopened for barytes in 1926.	Cumbria	17th or 18th century–1940s	Copper, Lead, Silver, Zinc, Barite
Droitwich Salt Wells Its brine ran roughly 25 per cent salt by volume — saltier than the Dead Sea — which is exactly why it could rise straight out of the ground on its own	Worcestershire	From around 600 BC–1922	Salt
Droskyn Mine Perhaps the oldest tin workings in Cornwall, with a waterwheel chamber carved out of the cliff.	Cornwall	to c. 1830s	Tin
Druid Mine Twenty years of hopeful investment, three bank and company failures and almost no copper, all recorded in an unusually complete archive.	Devon	1852–1872	Copper
Drumcarrow Colliery A Fife pit whose coal kept catching fire, so that in 1842 the smoke from a burning coal wall could stop all work.	Fife	Mid-1700s–c. 1850	Coal
Drumpellier Colliery A Coatbridge pit where gunpowder fired instead of a safety explosive set the coal dust alight in 1898.	North Lanarkshire	to after 1902	Coal
Drws-y-Coed Copper Mine Drws-y-Coed drew its workforce from across Britain's copper-mining world at once — Cornish miners recorded from 1761, Scots working alongside them, and, in the 1830s, an entire wave of miners and 'copper ladies' relocating from Anglesey's declining Parys Mountain.	Gwynedd	Medieval (recorded 1284)–1903	Copper
Dry Gill Mine Worked for mimetite sold to the glassmakers rather than for lead, and the source of the curved orange crystals called campylite that sit in mineral collections worldwide.	Cumbria	1846–1869	Lead, Barite, Manganese
Dry Rigg Quarry A Dales gritstone quarry whose stone is too skid-resistant to do without, and too far from a railway to be uncontroversial	North Yorkshire	1938–Still active	Sandstone
Dubs Quarry Closed because of how hard it was to get the slate down, not because the slate ran out; its tramway outlived it by thirty years.	Cumbria	By 1870, possibly earlier–1927 or 1932 (sources differ)	Slate
Duddingston No. 1 and 2 Mines The first completely electrified mine of the Scottish shale oil industry, linked by electric tramway to its crude oil works.	West Lothian	1900–1941	Oil Shale
Duddo Colliery A Duddo pit where five men drowned in 1857 when an old working broke in; none of them was ever recovered.	Northumberland	By 1814–1860s	Coal
Dudley Colliery In 1873 a reporter found 170 hewers raising 450 tons a day and a village that reckoned itself the champion bowling village of the North.	Tyne and Wear	From 19 April 1854 (sinking)–1977	Coal
Duffryn Colliery, Brynmawr A pit-and-slant mine producing 14,000 tons of coal a year at its 1930 peak, before vanishing from the record by 1935.	Blaenau Gwent	1921–by 1935	Coal
Duffryn Rhondda Colliery The Afan Valley's biggest steam-coal pit, its No.2 shaft deepened to 1,504 yards in 1962, four years before the NCB closed it as unworkable by machine.	Neath Port Talbot	By 1899–November 1966	Coal
Duke Pit A Whitehaven pit whose castellated Guibal fan house of 1870, the best surviving example in the country, ventilated the Wellington Pit long after Duke Pit itself had closed.	Cumbria	1747–1844	Coal
Duke Wood Colliery A pit sunk by fancy-woollen manufacturers to fuel their own mills, whose shaft still ventilates the last working mine in the village more than 160 years later.	West Yorkshire	from c. 1862–1863	Coal
Dukes Pit, Tredegar The pit that gave Dukestown its name, and an early example of water-balance winding.	Blaenau Gwent	from 1806	Coal
Dulais Colliery, Onllwyn A small Onllwyn anthracite pit where gas burned four men in 1907, three of them fatally, on one man's first shift underground.	Neath Port Talbot	By 1903–before 1947	Coal
Dulcote Quarry The Mendip quarry where Foster Yeoman began, now a food factory in a hole in the hill	Somerset	Mid-19th century–From 2016	Limestone
Dullatur Colliery A 1930s anthracite drift mine near Cumbernauld whose brick pithead buildings still stand.	North Lanarkshire	1935 (earlier workings by 1899)–May 1964	Coal
Dumbreck Colliery Baird's Kilsyth colliery of 1885 to 1963, where an electrical fire in a haulage road suffocated nine men a mile from the shaft in January 1938.	North Lanarkshire	1885 (sinking)–1963	Coal, Iron
Dunaskin Ironworks Eight blast furnaces once ran here day and night before closing in 1921 — the surviving works later reopened, briefly, as one of Scotland's best-preserved Victorian ironworks heritage sites.	South Ayrshire	1840s–1921 (closure)	Iron
Dundonald Colliery A coalfield worked since 1532, from Nasmyth's pits to the National Coal Board's 'Dothan' surface mine, which closed in 1964.	Fife	From 1532 (first record)–1964	Coal
Dunkerton Colliery The last, largest and deepest colliery sunk in the Somerset coalfield, built to beat the county's difficult ground by sheer scale, and down to a return of three people by 1933.	Somerset	1904–1925 or 1933 (sources differ)	Coal
Dunnet Mine A mine driven from inside an oil works, tunnelling under the works' own buildings to reach shale beneath the town.	West Lothian	After 1896 and before 1916–1927	Oil Shale
Dunnikier Colliery When the Panny stopped in 1927 it took Kirkcaldy's coal industry with it, and nothing replaced it until Seafield was sunk on the shore.	Fife	About 1880 (sinking)–1927	Coal
Dunraven Colliery For a few years in the 1890s this colliery was quite literally owned by an earl -- the same Earl of Dunraven the pit itself was named after.	Rhondda Cynon Taf	1865–1959	Coal
Dunston Colliery A Bowes pit that worked for a year, lay idle for fifteen, then ran for over half a century.	Tyne and Wear	1875 (first sunk 1873)–1947	Coal
Duntanlich Mine The UK's only economically viable barite deposit currently in production, developed specifically to guarantee a domestic supply of drilling-fluid weighting agent to the North Sea oil and gas industry once the older Foss Mine ran down.	Perth and Kinross	from 2016	Barite
Duntilland Colliery A Coltness ironstone-and-coal pit on the moor by Salsburgh, worked in thin seams for some eighty years.	North Lanarkshire	1865–April 1951	Coal, Ironstone
Durie Colliery The Fife Coal Company's pit at Sillerhole, Leven, whose workers' rows named the district and whose den of coal and ochre pits is now a public park.	Fife	1855–after 1903	Coal
Duxbury Park Colliery A Chorley pit remembered in a pit brow lass's own account of the screens, and kept on as Ellerbeck's pumping pit after it closed.	Lancashire	c. 1876–29 December 1917	Coal
Dyffryn Main Colliery The Bryncoch pits north of Neath, sunk to a record 200 yards before 1810, flooded out twice and reborn as the Main Company's Duffryn Main.	Neath Port Talbot	1806-1810–1929	Coal
Dykehead Colliery A shaft fire in 1861 from which volunteers hauled out twenty-eight men by hand.	South Lanarkshire	—	Coal
Dylife Remote and extensive upland lead workings	Powys	1640–1901	Lead, Copper, Silver, Zinc
Dyllas Colliery An ironmaster's drift of 1840 at Llwydcoed, where the Nine Feet seam ran about 21 feet thick.	Rhondda Cynon Taf	1840–before 1947	Coal
Dyneley Colliery A Cliviger drift worked for the Towneley and Deerplay companies and reopened by a private venture in the 1980s, only to be found worked out.	Lancashire	Late 1800s–1987	Coal
Dysart Colliery Six centuries of coal on one fire-prone seam, from an Earl of Orkney's coal-works in 1407 to the Frances pit's closure in 1988.	Fife	c. 1407–1988 (as Frances Colliery)	Coal, Ironstone