Mines

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31 mines beginning with Y, of 3568.

Mine	Region	Worked	Commodities
Yard Level, Tredegar The source of the Great Exhibition's block of coal, too heavy to take to London and still lying in Bedwellty Park.	Blaenau Gwent	1802–1873	Coal
Yarlside Mine A Furness haematite mine whose ore left on John Fell's experimental monorail, made unprofitable by pumping costs, phosphoric ore and royalties to two dukes.	Cumbria	from 1868	Iron
Yarner Copper Mine The mine's own engine house kept collapsing long after the copper ran out -- a 1978 rainstorm punched a fresh hole through it more than a century after the last ore was raised.	Devon	1857–1865	Copper
Yate Celestine Mines Ninety-five per cent of the world's celestine came out of these fields — and it was dug by farm labourers in the slack season	South Gloucestershire	1880s–1994	Celestine
Yatestoop Mine An eighteenth-century lead mine that moved its steam engine 200 yards underground in 1782 to save on pump rods.	Derbyshire	—	Lead
Yeoland Consols A Meavy valley tin mine on ground whose Elizabethan stamping mills Sir Walter Raleigh defended in 1600.	Devon	1852 (as Yeoland Consols)–1857	Tin
Yeolands Quarry One of Portland's deepest quarries, once earmarked for an Eden Project-style Jurassic park.	Dorset	to 2000s (largely redundant)	Limestone
Yesnaby Quarries A tsunami from the 1755 Lisbon earthquake reached this clifftop and nearly wrecked the quarry — and two centuries later the islanders themselves stopped a uranium mine here	Orkney	to after 1945	Freestone
Yew Craggs Quarry The other side of Honister Pass — green slate carried down by hand-sledge for a century, then by counterbalanced tramway.	Cumbria	Working by the early 18th century–1963	Slate
Yew Tree Colliery Site of the worst mining disaster in Tyldesley's history: a 25-death firedamp explosion in 1858, caused by a skipped safety inspection after the fireman overslept following a pay-rise celebration.	Lancashire	1845–19th century	Coal
Yewthwaite Mine Worked in the shadow of Goldscope over the hill: when the neighbour struck lead in 1853, most of Yewthwaite's men simply went to it.	Cumbria	1849–1893	Lead, Zinc
Yniscedwyn Colliery An Ystradgynlais anthracite mine whose flooded shaft forced a 1-in-3 drift, where nine men were sent runaway into the workings by a pulled stop block in 1892.	Powys	1872–22 March 1968	Anthracite
Ynisdavid Colliery Its seams were the Finery and the Sulphur: a colliery named by the copper and iron works it was sunk to feed.	Neath Port Talbot	By 1854–1872	Coal
Ynys Dafydd Colliery An explosion in the Nine-Feet seam killed twelve men and boys on 24 May 1856, one of the worst disasters recorded for this small Afan Valley pit.	Neath Port Talbot	1844 (possibly earlier)–1872	Coal
Ynysamman Colliery A Brynamman anthracite level owned by the Ynysamman Colliery Company of Pontardawe, growing to 138 men by 1915–16.	Carmarthenshire	1909–1914	Coal
Ynysarwed Colliery Already being worked under one owner or another for well over a century by the time it finally closed in 1955 — a genuinely old colliery whose exact opening date has been lost to an incomplete nineteenth-century record.	Neath Port Talbot	By 1823–December 1955	Coal
Ynysawdre Colliery A Tondu pit with fifty coke ovens beside it, whose last trial slants of 1915 found only old workings and water.	Bridgend	By 1875–1898	Coal
Ynyscorrwg Colliery A short-lived Afan Valley pit that grew from 92 men to well over 500 in a decade and was gone within a few years.	Neath Port Talbot	By 1912–1925 or 1926	Coal
Ynyscynon Colliery The pit by which the poet and coal owner Alaw Goch was known: David Williams of Ynyscynon.	Rhondda Cynon Taf	1843–1875	Coal
Ynysfach Colliery A 19th-century mine sited near the Ynysfach Iron Works.	Merthyr Tydfil	from 19th century	Coal
Ynysfechan Colliery Opened in 1838 by Parsons and Company to feed the Ystalyfera Iron Works, per J.E. Morgan's History of Pontardawe.	Neath Port Talbot	1838–1927	Coal
Ynysfeio Colliery The Troedyrhiw company's Rhondda Fawr steam-coal pits at Treherbert, deepened to the Gellideg at 335 yards in 1906 and 1,300 strong before Powell Duffryn shut them.	Rhondda Cynon Taf	Early 1850s–c. 1930 (production)	Coal
Ynyshir Colliery Electrical detonators were tried here successfully in 1886, before most of the coalfield had them.	Rhondda Cynon Taf	From 1875 (sinking)–1968	Coal
Ynyshir House Colliery The pit that started Ynyshir in 1845, which fed Crawshay's Treforest tinplate works and closed as the Jones Navigation in 1909.	Rhondda Cynon Taf	1845–31 January 1909	Coal
Yorkshire Main Colliery The colliery was renamed from 'Edlington Main' to 'Yorkshire Main' while still being sunk — a rebrand that stuck for the next seventy-four years.	South Yorkshire	1909 (sinking)–11 October 1985	Coal
Ysguborwen Colliery Founded by Samuel Thomas, one of the pioneers of the Welsh coal trade, whose son David Alfred Thomas became Viscount Rhondda; its abandoned workings caused the fatal 1896 inrush at the neighbouring River Level Colliery.	Rhondda Cynon Taf	c.1849–1919	Coal, Ironstone
Ystalyfera Colliery When the Coal Board closed it in 1957, its own divisional chairman said there was 'no rational excuse' for keeping the pit going.	Neath Port Talbot	By 1869–1957	Coal
Ystrad Einion Mine Small lead, copper and zinc mine in Cwm Einion, worked intermittently from the 18th century to 1903; retains a rare surviving underground waterwheel.	Ceredigion	18th century–1903	Copper, Lead, Silver, Zinc
Ystrad Iron Mine The lower of the two Betws Garmon iron mines, developed from 1909 by the Bettws Garmon Iron Ore and Smelting Company and its successors.	Gwynedd	1909 (small opencasts before 1900)–1919	Iron
Ystradgynlais Colliery A Swansea Valley anthracite colliery whose flooding in 1893 bankrupted its company, and which grew to some 450 men before the Amalgamated Anthracite combine closed it in 1938.	Powys	c. 1874–December 1938	Coal
Ystumtuen Mine Really a complex of several closely worked mines around the village it takes its name from, whose first industrial operator, the Company of Mine Adventurers, collapsed in 1709 amid accusations of fraudulent accounting.	Ceredigion	Working by 1698–1882	Lead, Zinc