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Barite Mines
Coal Mines
Manners Colliery
Manvers Coal Mine
Manvers Coal Mine
Mapperley Colliery
Measham Colliery
Mellor Colliery
Mexborough Colliery
Midgeholme Colliery
Minnie Colliery
Monument Coal Mine
Moorgreen Colliery
Morlais Colliery
Mould gill level Colliery
Murton Colliery
Copper Mines
Malham Smelt Mill
Marke valley Copper Mine
Mixon Copper Mine
Moel fleidiau Copper Mine
Moel hebog Copper Mine
Moss house trial Copper Mine
Gold Mines
Maestryfer Gold Mine
Maestryfer north and south Gold Mine
Gypsum Mines
Iron Mines
M9 and m7 (lindal moor) Iron Mine
Magher-e-breck Iron Mine
Mecklin park Iron Mine
Melbreak Trial
Middle kinmont Iron Mine
Morfa Iron Mine
Moss house Iron Mine
Mount Iron Mine
Mouzell Iron Mine
Ironstone Mines
Lead Mines
Maghies Lead Mine
Magpie Lead Mine
Maizebeck Lead Mine
Malham Smelt Mill
Mam engine Shaft
Mandale Lead Mine
Manorgill Lead Mine
Marlbeck Lead Mine
Marrick smelt mills Smelt Mill
Mawstone Lead Mine
Meall nan oighreag Lead Mine
Mellingloch Lead Mine
Merry tom Lead Mine
Merryfield Lead Mine
Merryfield Smelt Mill
Middlecleugh Lead Mine
Middlehope shield Lead Mine
Middlehopeburn Lead Mine
Middleshope Lead Mine
Middleton engine Lead Mine
Minera Lead Mine
Mogshaw Lead Mine
Mohopehead Lead Mine
Monksmoor Lead Mine
Moor Smelt Mill
Moor jepson Lead Mine
Moorend Level
Moorfurlong Lead Mine
Moorhigh Lead Mine
Moorwood sough Level
Moss Lead Mine
Mossdale Lead Mine
Mouldridge Lead Mine
Moulds high Smelt Mill
Moulds low Smelt Mill
Mousethwaite combe Trial
Mulreesh Lead Mine
Murton (scordale) Lead Mine
Muse Lead Mine
Myers head (low hartsop) Lead Mine
Limestone Mines
Middleton limestone Limestone Quarry
Minera.new workings Limestone Quarry
Monks Park Limestone Quarry
Monkton Farlegh Limestone Quarry
Manganese Mines
Moel llyfnant Manganese Mine
Moelfre Manganese Mine
Moelwyn no 2 Manganese Mine
Morfa manganese Manganese Mine
Mixture Mines
Other Mines
Marden Mine
Melyn llyn y pair Mine
Micklam clay Mine
Mill cliffe chert Mine
Mill hill sand Mine
Slate Mines
Machynlleth station Slate Quarry
Maenofferen Slate Quarry
Maesygamfa Slate Quarry
Maesypandy Slate Quarry
Manod Slate Quarry
Marchlyn Slate Quarry
Marine terrace Slate Quarry
Matthews Slate Quarry
Meillionen Slate Quarry
Melynllyn Slate Quarry
Minllyn Slate Quarry
Mirk hole Slate Quarry
Moel crymddan Slate Quarry
Moel drynogydd Slate Quarry
Moel faban Slate Quarry
Moel Fferna Slate Quarry
Moel lefn Slate Quarry
Moel llechwedd gwyn Slate Quarry
Moel pen-y-bryn Slate Quarry
Moel tryfan Slate Quarry
Moelfre Slate Quarry
Moelfryn Slate Quarry
Moelwyn Slate Quarry
Moelycroesau Slate Quarry
Moel-y-faen Slate Quarry
Moel-y-faen Slate Quarry
Moel-y-gest Slate Quarry
Moelygwartheg Slate Quarry
Morben Slate Quarry
Morfa lodge Slate Quarry
Mortar crag Slate Quarry
Mosedale Slate Quarry
Moss head Slate Quarry
Moss rigg Slate Quarry
Mynedd bychan Slate Quarry
Mynedd ednyfed Slate Quarry
Mynydd ty'n y ceunant Slate Quarry
Mynydd y waun Slate Quarry
Tin Mines
Magadalen Tin Mine
Mount wellington Tin Mine
Mulberry hill Tin Mine
