All mines (page 15 of 20)
Mines 1401–1500 of 1945, A–Z (page 15 of 20).
| Mine | Region | Worked | Commodities |
|---|---|---|---|
| Point of Ayr Colliery North Wales's last working colliery; extended out beneath the Dee Estuary until closure in 1996 |
Flintshire | 1883 (company formed); 1890 (main seam struck)–1996 | Coal |
| Polberro Mine Its tin was so pure it went straight from the mine to the smelter without dressing, and was sold as Diamond Tin. |
Cornwall | By the 1730s–1941 | Tin, Copper |
| Poldark Mine A tin mine abandoned around 1780 was rediscovered two centuries later, reopened as a tourist attraction, and then renamed after — and used to film — the very TV drama that made Cornish mining famous to a national audience. |
Cornwall | c. 1720–c. 1780 | Tin |
| Poldice Mine Poldice's three-act history — tin, then copper, then arsenic — tracks the entire arc of Cornish hard-rock mining in miniature, each shift in product driven by exactly the kind of market collapse and diversification that played out across the county as a whole. |
Cornwall | by 1512 (documented); certainly worked by the 17th century–1930 | Copper, Tin, Arsenic |
| Poldory Mine One of the three founding mines of United Mines -- alongside Ale and Cakes Mine and Wheal Cupboard, both already documented on this archive -- worked mainly on the 'Great South Lode' and, further north, the aptly-named 'Hot Lode', named for its extreme temperatures at greater depth. |
Cornwall | Probably active by 1760 as a small-scale tin mine.–Closed around 1870 as part of Clifford Amalgamated Mines | Tin, Copper |
| Polhigey Mine A small Wendron tin mine worked from the 1850s and revived in the 1920s, abandoned in 1930. |
Cornwall | By 1850–1930 (abandonment plans) | Tin |
| Polkemmet Colliery A West Lothian coal mine worked through the 20th century. |
West Lothian | No. 1 shaft sunk 1913; No. 2 shaft sunk 1916; production from 1921–1986 (flooded 1984) | Coal |
| Polmaise Colliery The pit that sparked the whole 1984-85 miners' strike outlived the strike itself by two more years — the closure the NCB blamed on geology came anyway, just later than announced. |
Stirling | Shafts sunk from January 1904–Announced December 1983; finally closed 15 July 1987 | Coal |
| Poltesco Serpentine Works A Cornish cove that briefly supplied mantelpieces to royalty, undone in the end by one lost, uninsured shipment. |
Cornwall | Small-scale working from the early 18th century; factory built 1855-66–1893 | Serpentine, Talc |
| Pont y Fenni Quarry Fossils that survived the folding of South Wales, in a roadside face the size of a tennis court. |
Carmarthenshire | No reliable opening date has yet been located.–Disused by 1985, when the site was notified | Mudstone |
| Ponthenry Colliery The Gwendraeth Valley pit whose gas and coal-dust outbursts killed ten men in the 1920s and closed it with its coal still in the ground. |
Carmarthenshire | 1865 (possibly working by the 1820s)–1936 | Coal |
| Pontyberem Colliery A Gwendraeth valley anthracite colliery worked through slants, swallowed by the 1920s amalgamations |
Carmarthenshire | 1845–No reliable closure date has yet been located. | Anthracite |
| Pontyclerc Colliery A colliery that spent years mining only clay for its own brickworks, whose bricks stamped 'P C' still turn up around Ammanford. |
Carmarthenshire | Possibly 1835; recorded 1858–1934 | Coal, Fireclay |
| Pooley Hall Colliery The first colliery in Britain to have an underground lavatory — installed with a rosewood seat for a royal visit in 1924, and removed within a week because the stench had become unbearable. |
Warwickshire | 1850–1965 | Coal |
| Port Mulgrave Mine Rather than build a second harbour once the nearer ore ran out, the company simply tunnelled another mile underground to reach the richer ground at Grinkle -- moving the mine to the harbour instead of the other way round. |
North Yorkshire | 1856–1870s | Iron |
| Portland Colliery The Gilmours’ Ayrshire colliery, worked from a scatter of pits between Kilmarnock and Hurlford, and the scene of two fatal explosions a quarter of a century apart. |
East Ayrshire | By 1856–After 1938 | Coal, Fireclay |
| Portland Stone Quarries One of the few UK quarries to have deliberately converted from open working to underground mining specifically to reduce its surface footprint. |
Dorset | Worked since at least the Roman period–Still active | Limestone |
| Portway Lead Mine The earliest recorded lead mine in the whole Winster mining area, dating back to the 1650s -- and named after the prehistoric Portway trackway it stands beside, on its route between Mam Tor and the edge of Nottingham. |
Derbyshire | 1650s–No reliable closure date has yet been located. | Lead |
| Potter's Pit One of the four mines -- alongside Tankerville, Pennerley and Bog Mine -- combined into Tankerville Great Consols in 1879-80 under Peter Watson, a director of the already-published Devon Great Consols in Devon. |
Shropshire | Working by 1879–By 1884 | Lead |
| Potts Ghyll Mine Barytes the lead miners had thrown away, dug out of the Caldbeck Fells for munitions. |
Cumbria | 1844–Working into the 1940s | Barite |
| Poynton Collieries The largest collieries in Cheshire, held by one family for a century — and the place where a Boulton and Watt agent went in 1796 to catch a rival infringing the separate-condenser patent, and found the engine man half drunk on Good Friday. |
Cheshire | By 1600–30 August 1935 | Coal |
| Preseli Bluestone Quarries If the quarrying interpretation is right, this is the oldest working record in the entire archive by roughly four and a half thousand years — and archaeologists still argue about whether it happened at all |
Pembrokeshire | Neolithic working, radiocarbon dated to around 3000 BC–c. 3000 BC (no later working) | — |
| Prestongrange Colliery The earliest colliery in Scotland to be recorded in writing, and the only Cornish beam engine north of the border |
East Lothian | 12th century; the final colliery's first shaft sunk 1830–1962 | Coal, Fireclay |
| Prestonhill Quarry A century of whinstone shipped from its own pier — and a flooded pit that now trains Navy and fire-service divers while claiming the lives of swimmers. |
Fife | 1896–1980s | Whinstone |
| Prestonlinks Colliery The last underground pit in East Lothian, closed in 1964 and cleared away entirely to make room for Cockenzie power station. |
East Lothian | 1899–February 1964 | Coal |
| Pretoria Pit (Hulton Colliery Bank Pit) The third-worst mining disaster in British history happened here on the last working day before Christmas 1910; the pit then worked on quietly for another twenty-three years. |
Greater Manchester | Shafts sunk 1900–01–14 April 1934 | Coal |
| Price's Colliery A Dowlais Iron Company level raising both ironstone and coal for the works, abandoned with the rest of the group in May 1924. |
Merthyr Tydfil | No reliable opening date has yet been located.–May 1924 | Coal |
| Priddy (St Cuthbert's) Lead Works The 1863 dye-tracing experiment that proved St Cuthbert's wastewater reached Wookey Hole within eight hours — after chaff and ink had both failed to show up — is one of the earliest documented uses of dye tracing to prove underground water connections anywhere in Britain. |
Somerset | AD 49 (Roman)–1908 | Lead, Silver |
| Primrose Colliery Fourteen men and boys and seven horses were suffocated underground in 1858 not by firedamp but by the fumes of the colliery's own engine boiler. |
Neath Port Talbot | 1840–Early 1900s | Coal |
| Prince Edward Gold Mine Gold from this remote hillside mine is said to have gone into the bar from which royal wedding rings were made, and its adit still has the strongroom where the gold was locked away. |
Gwynedd | Recorded 1895 (as Moel Croesau)–1935 | Gold |
| Prince of Wales Colliery The 1878 Abercarn colliery disaster killed 268 men and boys in one of the deadliest firedamp explosions in the South Wales coalfield. |
Caerphilly | first sunk 1836; redeveloped 1859-62–shafts filled and site cleared 1959 | Coal |
| Prince of Wales Mine The only site in east Cornwall to retain the remains of all three types of mine engine house -- one each for pumping, winding and stamping ore -- side by side. |
Cornwall | First recorded as Wheal Goodluck in 1580–Last worked in 1977 (exploratory adit) | Copper, Tin, Arsenic |
| Prince of Wales Quarry A grandly-named Welsh slate quarry that failed within a decade, leaving its buildings and workings unusually intact as a snapshot of an unmodernised Victorian venture. |
Gwynedd | 1873–By 1886 | Slate |
| Princess Royal Colliery Unprofitable for half a century under five different owners before finally becoming one of the Forest of Dean's most productive collieries — its listed 1939 pithead baths are now home to a colony of bats. |
Forest of Dean | 1842 (gale); 1897 (Yorkley Seam production)–30 March 1962 | Coal |
| Prospect Lead Mine A lead mine at Alport recorded by the Derbyshire Historic Environment Record. |
Derbyshire | No reliable opening date has yet been located.–No reliable closure date has yet been located. | Lead |
| Providence Mine The mine that Kettlewell village was built on the fortunes of, and the one whose own workers went on to found its rival across the valley. |
North Yorkshire | 1663–1874 | Lead |
| Prudhoe Colliery A Tyne valley colliery whose workforce halved twice in five years, and whose sixteen recorded deaths are almost all haulage: men and boys run over by their own tubs. |
Northumberland | By 1860–After 1930 | Coal, Fireclay |
| Pulloxhill Gold Mine A royal gold mine seized by the Crown in 1680, besieged by prospectors for months, and found to contain nothing but flakes of mica |
Bedfordshire | 1680–Abandoned by 1683, or possibly worked on until about 1750 | Gold |
| Pumpherston Oil Works The historic heart of Scotland's shale oil industry, and namesake of the standard Pumpherston retort design used across the whole trade |
West Lothian | 1883-84–1964 (refinery); early 1990s (detergent plant) | Oil Shale |
| Punchard Gill Mine Miners here built a canal level in 1820 specifically to float ore and spoil out of the workings by water, and the site later became one of only four Arkengarthdale coal mines still working after 1900, struggling on until 1927 against better-quality coal shipped in from County Durham. |
North Yorkshire | By 1521–The coal working closed in 1927 | Lead, Coal |
| Purbeck Marble Quarries Salisbury Cathedral alone used some 3,000 columns of it — cut from shafts sunk barely wider than a man |
Dorset | Worked since Roman times; medieval peak 12th-14th centuries–Commercial extraction ceased in the 1990s | Limestone |
| Purfleet Chalk Pits Quarried since at least 1554 because the chalk met the river — and the faces it opened gave geologists an entire interglacial, named after the place. |
Essex | By 1554–Early 1920s (cement works and quarry) | Chalk |
| Putwell Hill Mine After centuries as a lead mine, its vein was reworked from the 1880s purely for fluorspar -- with its own embanked sidings built to load spar directly onto the Midland Railway below. |
Derbyshire | Documented from the late 16th century–Fluorspar working continued until 1931 | Lead, Fluorspar |
| Pwllbach Colliery A small Swansea valley anthracite pit that spent twenty years employing fewer than a hundred people and then grew eightfold in the anthracite boom. |
Neath Port Talbot | By 1894–No reliable closure date has yet been located. | Coal, Anthracite, Fireclay |
| Pye Hill Colliery The Jacksdale pit of 1874 that ended as the surface for three amalgamated collieries, its winding wheel now a memorial at Underwood. |
Nottinghamshire | 1874–August 1985 | Coal |
| Quarter Colliery The Lanarkshire pit where eleven died in 1841 — four of them rescuers — and where the teenage Keir Hardie drove ponies and then hewed coal. |
South Lanarkshire | By 1841, possibly earlier–1930 | Coal |
| Quay Foot Quarry Green slate for Victorian Keswick, and a photograph of the quarry taken in 1857. |
Cumbria | Working by the mid-19th century–Not returned after 1930 | Slate |
| Raasay Iron Mine Some 260 German prisoners of war worked this mine from 1916, fenced off from the British and local miners beside them — and islanders' own accounts describe surprisingly little ill-feeling between the two |
Highland | Developed from 1913; production 1914-1919–1919 | Iron |
| Racecourse Colliery, Hanley Three shafts sunk on the old Hanley racecourse, where 30,000 people had watched the Potteries races forty years before. |
Staffordshire | c. 1870–1941 | Coal, Ironstone |
| Rainslow Scrins A geological rarity as much as a mining one: the ten-odd parallel scrins that give the site its name occur in this concentration nowhere else in the country. |
Derbyshire | Working possibly by 1541–No reliable closure date has yet been located. | Lead |
| Raisby Hill Quarry Still working after nearly two centuries, and the type locality for the rock formation that carries its name. |
County Durham | By 1896 in the official lists; quarrying here is older–Still working | Limestone |
| Ram Hill Colliery A rope-and-drum accident here in 1855 killed two colliers and prompted a government inspector's blunt condemnation of using a jointed rope to draw men up a shaft. |
Gloucestershire | A dramway serving the site was built in 1828–Closed in 1860 | Coal |
| Rampgill Mine At its early-20th-century peak, one purpose-built mill at one Alston Moor village was processing three-fifths of all the zinc ore raised anywhere in Britain — a striking concentration of a whole country's output into a single remote Pennine dale. |
Cumbria | 1690 (Rampgill Vein discovered)–1949 (Vieille Montagne); some later 20th-century working | Lead, Zinc |
| Ramsley Mine Dartmoor's Sticklepath Fault split the same mineral lodes worked here as at neighbouring Belstone, and the derelict brick flues are still crusted white. |
Devon | Trial working from 1851; main development from 1858–c.1911-12 | Copper |
| Ramsley Moor Lead Smelting Site It isn't a smelting site at all in the usual sense -- it's where the waste slag from a nearby bole fire was broken, washed and resmelted a second time to wring out the lead the first burn had missed. |
Derbyshire | Believed late medieval–No reliable closure date has yet been located. | Lead |
| Randolph Colliery A pit that survived a year-long underground fire fed by a neighbouring colliery blaze already two decades old, then worked on for another ninety years. |
Fife | 1850–1968 | Coal |
| Ratgoed Quarry The remotest of the quarries served by the Corris Railway, reached only by its own 1¾-mile horse-worked Ratgoed Tramway -- a line so isolated that it outlived the passenger-carrying Corris Railway itself, still working as a horse-drawn line under British Railways ownership after Corris closed in 1948. |
Gwynedd | Worked as Alltgoed Quarry from before 1844–1946 | Slate |
| Ravenhead Colliery Three quarters of its coal went straight to Pilkington's glassworks next door, and Pilkington bought the locomotives that moved it. |
Merseyside | 1867 (sinking from 1866)–October 1968 | Coal, Fireclay |
| Red Gill Mine Its ore is unusually poor in carbonates, a quirk of chemistry that produced an exceptional suite of oxidised copper-lead minerals -- among them the type specimens of redgillite, first described from this site. |
Cumbria | uncertain; worked mainly during the 19th century–No reliable closure date has yet been located. | Lead, Copper |
| Red Rake Mine Almost everyone calls it Red Rake Sough, but it was never a drainage sough at all -- it was built purely to haul ore out, one of the rare Derbyshire mine features that carries its own exact date. |
Derbyshire | Newburgh Level completed 27 October 1851–Reworked for fluorspar, lead and barite in the early 20th century | Lead, Fluorspar |
| Red Scar Mine Because Red Scar was so remote, the company built its workers proper on-site accommodation -- a rare thing for so short-lived and unsuccessful a venture. |
North Yorkshire | 1862–1877 | Lead |
| Redding Colliery One of Scotland's worst mining disasters happened here in 1923 when old flooded workings burst through a fault the colliery's own managers had trusted as a natural barrier. |
Falkirk | No.23 pit's two shafts sunk from 1896–1958 | Coal |
| Redheugh Colliery The last colliery working in Gateshead itself, abandoned in 1927 — and blown open from below two years later, when its sealed shafts exploded without warning. |
Tyne and Wear | 1872–28 May 1927 | Coal |
| Redmoor Mine A working tin mine as early as the 18th century, closed in the 1892 tin-price collapse, and now the subject of a 21st-century critical-minerals exploration project on the same ground. |
Cornwall | 1700–1945 | Tin, Copper, Arsenic, Tungsten, Lead, Silver |
| Reigate Caves Silver sand mines entered through doorways in the wall of Britain's oldest road tunnel |
Surrey | 18th century or earlier; Tunnel Road mines after 1823–early 20th century | Silica Sand |
| Rhas Las Colliery At least three colliers died here in separate roof falls in the early 1850s; the colliery lent its name to the whole district's Nine-Feet (Rhas Las) seam. |
Merthyr Tydfil | By 1856, possibly earlier–By 1871 | Coal |
| Rhigos Colliery An anthracite drift complex above the Vale of Neath where 16 men died in a 1941 gas explosion the coroner concluded had been set off by a miner smoking underground. |
Neath Port Talbot | 1919, as Peacock–February 1965 | Coal |
| Rhiwbach Quarry A remote Blaenau Ffestiniog slate quarry served by its own tramway to the Ffestiniog Railway, and the last Welsh slate quarry where workers lived on site in barracks. |
Gwynedd | Commercial working began around 1812–1952 | Slate |
| Rhondda Mountain Colliery A 15-year-old collier, William Morris, died under a roof fall here in 1876; the mine worked on into the 1930s under several owners. |
Neath Port Talbot | By 1876, possibly c.1860 as Fforch-y-Grawn–1947 (Nationalisation) | Coal |
| Rhoose Quarry The overshadowed neighbour: a Blue Lias quarry and cement works kept as make-up capacity for Aberthaw, which nonetheless pioneered low-heat clinker for a dam. |
Vale of Glamorgan | 1913–1979 (clinker); site cleared after 1992 | Limestone |
| Rhosydd Quarry Rhosydd's workings reach so far underground that they meet the neighbouring Croesor quarry's own tunnels beneath the mountain — exploration reports describe a genuine underground 'through trip' between the two sites, a rare case of two historic Welsh slate mines still physically joined. |
Gwynedd | worked from 1840; Rhosydd Slate Company formed 1853–1930 (final reopening attempt failed 1948) | Slate |
| Rhyd Fach Mine One of the minor lead workings scattered across the Nant-y-Moch valley, in the same mining cluster as the much better documented Eaglebrook and Hafan mines, though no narrative account of its own working history has yet been located. |
Ceredigion | No reliable opening date has yet been located.–No reliable closure date has yet been located. | Lead |
| Rhydwain Colliery An early Hirwaun level, documented only by its 1878–82 owner and manager — a genuinely thin record, not a shortcut taken. |
Rhondda Cynon Taf | By 1878–No reliable closure date has yet been located. | Coal |
| Rhydycar Colliery A pit sunk to the Gellideg seam for the Plymouth Iron Works Company, its name preserving that of the farm whose freehold traces back through a 1729 divided inheritance. |
Merthyr Tydfil | 19th century–March 1924 | Coal |
| Riddochhill Colliery Seven photographs of its winding engine were taken in 1968, the year it closed; where the engine went afterwards is not recorded. |
West Lothian | 1890–1968; abandoned 1969 | Coal |
| Rigg Head Quarry A workforce of exactly two in 1930 — one man underground, one at the surface — on a hillside that had been quarried for three centuries. |
Cumbria | Working by 1930–No reliable closure date has yet been located. | Slate |
| Ripley Colliery Butterley's own-town pit at Ripley, over a thousand strong when the Coal Board closed it in 1949, whose 1857 explosion put the under-viewer in the dock. |
Derbyshire | 1846 (museum); 1854 or 1863 (local histories)–October 1949 | Coal |
| Risca New Pit 120 killed two years after it started raising coal — and, a decade later, the first colliery in South Wales lit by electricity at the pit bottom. |
Caerphilly | 1878–1967 | Coal |
| Risehow Colliery Opened in 1918 as its neighbour Flimby was finishing, and grew to 915 men by 1925 — the West Cumberland pit that outlasted them all. |
Cumbria | 1918–1966 | Coal |
| Rising Sun Colliery In 1935 its coal preparation plant was called probably the most complete in the world; the site is now a country park. |
Tyne and Wear | 1908–26 April 1969 | Coal |
| River Level Colliery, Aberdare Abernant levels opened by the Aberdare Iron Company in the early 1830s, with a fatal explosion reported in 1836. |
Rhondda Cynon Taf | Early 1830s–1940 | Coal |
| Roanhead Iron Mine Controlled by one family, the Kennedys, across three generations of Furness ironmasters. |
Cumbria | Leased 1852–1942, when the last deposit was exhausted | Iron |
| Robbins Colliery Worked in the mid-1800s by the Cyfarthfa Iron Company. |
Merthyr Tydfil | By the 1820s–No reliable closure date has yet been located. | Coal |
| Robertsbridge Furnace A Wealden ironworks on the 'sow track' route carrying iron goods toward the coast. |
East Sussex | 1539-41–1793 (furnace) | Iron |
| Robin Hood Colliery J. and J. Charlesworth named their pits after their daughters, and this one was Jane Pit; a brick ventilation shaft by the recreation ground is all that is left of it. |
West Yorkshire | 1854–1960s | Coal |
| Rodderup Fell Mine Laid out by John Smeaton in the 1770s, and the only Alston Moor mine ever worked commercially for fluorspar. |
Cumbria | Levels driven from about 1800–Underground lead working ceased 1948 | Lead, Fluorspar |
| Roddymoor Colliery Five seams within 34 fathoms of the surface, feeding the byproduct coke ovens that made 'Pease's West' coke and built the village. |
County Durham | 1844–10 August 1963 | Coal, Witherite, Fireclay |
| Rogerley Mine Rogerley's green fluorite doesn't need an ultraviolet lamp to fluoresce — held up to ordinary daylight, it glows a visible bluish-violet, a property rare enough that it made an obscure 19th-century limestone quarry a destination for mineral collectors worldwide. |
County Durham | from early 1970s | Fluorspar |
| Roman Gravels Mine Its 'Roman' name was added in the 19th century after miners reported Roman tools, coins and a lead ingot in old workings, finds later writers have doubted, one calling the ingot a likely share-promotion story; yet its open cuts are a rare survival, and it was one of fewer than ten Romano-British mine sites evaluated for protection in 1990–91. |
Shropshire | possibly Roman (c. AD 120)–1895 | Lead |
| Rookhope (Boltsburn Mine) The most successful of the Weardale Lead Company's mines, made rich by a chance 1892 discovery, and served by a 3-mile aerial ropeway; its fluorite was pure enough to be sold to Zeiss for optics. |
County Durham | early 19th century–1931 | Lead, Fluorspar |
| Rose Bridge Colliery The deepest coal shaft in the world in 1872 at 2,448 feet, and by 1923 the colliery employed twenty-four people. |
Greater Manchester | 1859–24 July 1941 | Coal |
| Rose Heyworth Colliery It was named for the managing director's wife, and for its last twenty-six years its coal came out of a different hillside altogether. |
Blaenau Gwent | Sunk 1872; first coal 1874–1985 | Coal |
| Rosebank Colliery, Dunfermline Nimmo's six-pit Rosebank Colliery on Dunfermline's eighteenth-century Elgin coal ground, reworked from 1881 and abandoned in 1918. |
Fife | 1881 (earlier pits from the 18th century)–June 1918 | Coal |
| Roseberry Mine The largest of Roseberry Topping's three ironstone mines, once blamed for the 1912 rockfall that gave the hill its lopsided shape -- a verdict modern geology has overturned. |
North Yorkshire | 1870 (worked 1871-87, 1906-26)–1924 (machinery removed by 1931) | Iron |
| Rosebush Slate Quarry A Preseli Hills slate quarry that supplied roofing for the Palace of Westminster and spawned a purpose-built railway and a planned Victorian spa village that never took off. |
Pembrokeshire | 1842–1914 | Slate |
| Rosedale Ironstone Mines A remote moorland ironstone boom that swelled Rosedale's population fivefold, leaving its calcining kilns as landmarks for miles |
North Yorkshire | 1857 (west side); 1859 (east side)–1929 (final closure; briefly reopened 1919-26) | Iron |
| Rosehall Colliery Addie's dozen-pit colliery south of Coatbridge, 1,600 strong in 1910, whose rows reached Orwell and whose 1934 explosion killed five. |
North Lanarkshire | 1855 (deaths recorded from 1853)–September 1940 | Coal, Fireclay, Ironstone |
| Rosemanowes Quarry A Cornish granite quarry that became Europe's first hot dry rock geothermal experiment — it cracked the granite with water alone, but never found rock hot enough to raise steam. |
Cornwall | 19th century–No reliable closure date has yet been located. | Granite |
| Rosevale Mine A small Cornish tin mine at Zennor, now preserved by volunteers as the only underground mine restoration project of its kind in the county. |
Cornwall | Worked as Wheal Chance from the 18th century–Suspended 1914; company wound up by 1925 | Tin |
| Roslin Colliery A Midlothian pit still called The Moat, which grew while its neighbours shrank. |
Midlothian | c. 1876; re-sunk 1901-3–1969 | Coal |