| G. and W. Nicholson |
1 |
1860–1890 |
Northumberland |
Coal |
| G. J. Allen |
1 |
from 1869 |
Devon |
Brick Clay |
| G. S. Philipps |
1 |
from 1855 |
Pembrokeshire |
Anthracite, Coal |
| G. S. Worthington |
1 |
1860–1870 |
Caerphilly |
Coal |
| G. T. Gilpin-Brown |
1 |
1890–1905 |
North Yorkshire |
Lead |
| Gaddair Copper Mining Company |
1 |
1839–1845 |
Anglesey |
Chrysotile, Copper |
| Galantas Gold Corporation |
1 |
1995–2026 |
County Tyrone |
Gold |
| Garscube Coal Company Limited |
1 |
1921–1947 |
North Lanarkshire |
Coal |
| Garswood Hall Collieries Company |
1 |
to 1932 |
Greater Manchester |
Coal |
| Gartheiniog Slate Company Limited |
1 |
1881–1884 |
Gwynedd |
Slate |
| Gauchalland Coal Company |
2 |
1905–1920 |
East Ayrshire |
Coal |
| Gavin Paul and Sons |
1 |
1890–1922 |
West Lothian |
Coal |
| Geevor Tin Mines Ltd |
1 |
1911–1990 |
Cornwall |
Copper, Tin |
| The Gell family |
1 |
1700–1900 |
Derbyshire |
Limestone |
| Gelli and Tynybedw Collieries Company |
1 |
1884–1894 |
Rhondda Cynon Taf |
Coal |
| Gelligaer Coal Company |
1 |
from 1847 |
Caerphilly |
Coal |
| Gelligaer Colliery Company |
2 |
to 1887 |
Caerphilly |
Coal |
| Gellyceidrim Collieries Co. Ltd |
1 |
|
Carmarthenshire |
Anthracite |
| General Refractories Ltd. |
1 |
to 1946 |
South Yorkshire |
Coal, Fireclay |
| Geo. Taylor & Co. |
1 |
1911–1916 |
South Ayrshire |
Coal |
| George and Robert Stephenson |
2 |
1832–1852 |
Derbyshire, Leicestershire |
Coal, Ironstone |
| George and William Schofield |
1 |
from 1914 |
North Yorkshire |
Whinstone |
| George Blood |
1 |
to 1900 |
Staffordshire |
Coal |
| George Bradley |
1 |
1873–1888 |
West Yorkshire |
Coal |
| George Brewer |
1 |
1820–1855 |
Blaenau Gwent |
Coal |
| George Burt |
1 |
1887–1976 |
Dorset |
Freestone |
| George Cottingham |
1 |
1865 |
North Yorkshire |
Lead |
| George Crookston and Son |
1 |
1874–1908 |
Glasgow |
Coal |
| George Ford and Sons |
1 |
1843–1865 |
Bridgend |
Coal |
| George Green |
2 |
1845–1886 |
Lancashire, Powys |
Coal, Lead |
| George Greenwood |
1 |
1940–1964 |
North Yorkshire |
Sandstone |
| George H. Pattinson |
1 |
from 1888 |
Cumbria |
Slate |
| George Heaton |
1 |
1855–1874 |
West Yorkshire |
Coal, Fireclay |
| George Insole & Son |
1 |
1844–1939 |
Rhondda Cynon Taf |
Coal |
| George Lightley |
1 |
1864 |
Cornwall |
Copper, Tin |
| George Moir |
1 |
1883–1885 |
West Lothian |
Coal |
| George Moor |
1 |
1938–1946 |
Cornwall |
Copper, Tin, Tungsten |
| George Phipps |
1 |
1892–1895 |
South Gloucestershire |
Ochre |
| George Powell |
1 |
1824–1830 |
Gloucestershire |
Coal |
| George Simpson |
1 |
1818–1850 |
West Lothian |
Coal |
| George Stephenson |
1 |
from 1840 |
Derbyshire |
Limestone |
| George Templer |
1 |
1820–1829 |
Devon |
Granite |
| George Watkinson & Sons |
2 |
1875–1947 |
Flintshire, Rhondda Cynon Taf |
Coal |
| Gibbs & Co. |
1 |
1872–1900 |
Essex |
Chalk |
| Gibbs and Canning |
1 |
from 1862 |
Staffordshire |
Coal, Fireclay |
| Gillfoot Park Mining Company |
1 |
1879–1900 |
Cumbria |
Iron |
| Gilwen Colliery Company |
1 |
1908–1916 |
Neath Port Talbot |
Coal |
| Gjers, Mills & Co. Ltd |
1 |
1872–1904 |
North Yorkshire |
Ironstone |
| Glamorgan Coal Company |
1 |
1861–1908 |
Rhondda Cynon Taf |
Coal, Fireclay |
| Glamorgan Haematite Iron Ore Company |
1 |
1900–1976 |
Rhondda Cynon Taf |
Iron |
| Glan-y-Pwll Slate & Slab Company Ltd |
1 |
1861–1872 |
Gwynedd |
Slate |
| Glanamman Anthracite Collieries Limited |
1 |
1929–1943 |
Carmarthenshire |
Coal |
| Glangarnant and Noyadd Collieries Company Limited |
1 |
to 1909 |
Carmarthenshire |
Coal |
| Glasbrook Brothers Ltd |
1 |
1870–1947 |
Swansea |
Coal |
| Glascote Colliery Co. Ltd |
1 |
|
Staffordshire |
Coal, Fireclay |
| Glasgow Iron & Steel Company Ltd |
1 |
1945–1947 |
Argyll and Bute |
Coal |
| Glasgow Iron Company |
1 |
from 1876 |
Midlothian |
Coal |
| Glass Houghton and Castleford Collieries Ltd. |
1 |
from 1905 |
West Yorkshire |
Coal |
| Glassbrook |
1 |
1870–1873 |
Bridgend |
Coal |
| Glebe Mines Ltd |
2 |
1936–2010 |
Derbyshire |
Fluorspar, Lead |
| Glenariff Iron Ore and Harbour Company |
1 |
1873–1885 |
County Antrim |
Iron |
| Glenavon Garw Collieries Limited |
2 |
1907–1947 |
Neath Port Talbot, Rhondda Cynon Taf |
Coal |
| Glenavon Rhondda Collieries Company, Limited |
1 |
1899–1900 |
Neath Port Talbot |
Coal |
| Glenboig Union Fireclay Company |
1 |
1882–1956 |
North Lanarkshire |
Fireclay |
| Glenbuck Iron Company |
1 |
1795–1813 |
East Ayrshire |
Coal |
| Glendon Iron Company |
2 |
1863–1885 |
Derbyshire, Northamptonshire |
Coal, Iron |
| Glengarnock Iron and Steel Company |
2 |
1880–1915 |
North Ayrshire |
Coal, Ironstone |
| Glentaggart Coal Company Limited |
1 |
1943–1947 |
South Lanarkshire |
Coal |
| Globe Collieries Company |
1 |
from 1917 |
Neath Port Talbot |
Coal |
| Glyn Colliery Company |
1 |
1878–1903 |
Rhondda Cynon Taf |
Coal |
| Glyn Merthyr Colliery Company |
1 |
|
Neath Port Talbot |
Coal |
| Glyn Neath Collieries Limited |
1 |
1923–1937 |
Neath Port Talbot |
Coal |
| Glyncorrwg Colliery Ltd |
1 |
1904–1927 |
Neath Port Talbot |
Coal |
| Glynea and Castle Coal and Brick Company |
1 |
1908–1913 |
Carmarthenshire |
Coal |
| Glynmoch Colliery Company |
1 |
1901–1902 |
Carmarthenshire |
Coal |
| Godolphin family |
1 |
to 1785 |
Cornwall |
Copper, Lead, Tin |
| Goitre Tower Anthracite |
1 |
1995–2008 |
Rhondda Cynon Taf |
Coal |
| Golden Valley Ochre and Oxide Company |
1 |
1895–1970 |
South Gloucestershire |
Ochre |
| Goonvean and Rostowrack China Clay Co. Ltd |
1 |
1932–2012 |
Cornwall |
China Clay |
| Gorsgoch Coal, Brick and Lime Company |
1 |
1881–1885 |
Carmarthenshire |
Coal |
| Gospel Oak Colliery Company |
1 |
1894–1910 |
West Midlands |
Coal, Ironstone |
| Gotham Company |
1 |
1918–1960 |
Cumbria |
Gypsum |
| Governor and Company of Copper Miners in England |
3 |
1850–1872 |
Neath Port Talbot |
Coal |
| Graigola Merthyr Company Ltd |
2 |
1885–1947 |
Neath Port Talbot, Swansea |
Coal |
| Granville Colliery Company |
1 |
1872–1947 |
Derbyshire |
Coal |
| Grassmoor Colliery Company |
1 |
1846–1928 |
Derbyshire |
Coal |
| Grazebrook and Aston |
1 |
1860–1890 |
West Midlands |
Coal, Ironstone |
| Great Crinnis Copper Mining Company |
1 |
|
Cornwall |
Copper, Lead, Silver |
| The Great Laxey Mining Company Limited |
2 |
1848–1929 |
Isle of Man |
Lead, Silver, Zinc |
| Great Moelwyn Slate Company Ltd |
1 |
1860–1871 |
Gwynedd |
Slate |
| Great Perran Iron Ore and Iron Company |
1 |
1877–1878 |
Cornwall |
Iron, Zinc |
| Great Snaefell Mining Company |
1 |
1871–1908 |
Isle of Man |
Lead, Silver, Zinc |
| Great Treverbyn China Clay Co. Ltd |
1 |
1913–1966 |
Cornwall |
China Clay, Tin |
| Great Western Colliery Co. Ltd. |
3 |
1865–1930 |
Rhondda Cynon Taf |
Coal |
| Great Western Railway |
1 |
1854–1865 |
Rhondda Cynon Taf |
Coal |
| Great Wheal Vor United |
1 |
1853–1877 |
Cornwall |
Arsenic, Tin |
| Great Work Consolidated Tin Mines Ltd |
1 |
1888–1902 |
Cornwall |
Copper, Lead, Tin |
| Great Work Tin Mines Ltd |
1 |
1935–1938 |
Cornwall |
Copper, Lead, Tin |
| Great Wyrley Colliery Company |
1 |
1872–1925 |
Staffordshire |
Coal, Ironstone |
| Green Holland and Company |
1 |
1858–1870 |
Lancashire |
Coal |
| Greenburn and Tilberthwaite Mining Company |
1 |
1925–1940 |
Cumbria |
Copper |
| Greenburn and Tilberthwaite Syndicate |
1 |
1906–1909 |
Cumbria |
Copper |
| Greenside Mines Ltd |
1 |
1954–1962 |
Cumbria |
Lead, Silver |
| Greenside Mining Company |
2 |
1825–1889 |
Cumbria |
Lead, Silver |
| Greenside Mining Company Ltd |
1 |
1889–1920 |
Cumbria |
Lead, Silver |
| Gribdale Mining Company Ltd |
2 |
1910–1920 |
North Yorkshire |
Whinstone |
| Grieve and Nasmyth |
1 |
|
Fife |
Coal |
| Griff Colliery Company Ltd |
1 |
1882–1947 |
Warwickshire |
Coal |
| Griffith Williams Griffiths |
1 |
1875–1899 |
Gwynedd |
Slate |
| Grimebridge Colliery Co. Ltd |
1 |
1997–2014 |
Lancashire |
Coal |
| Grimwith Mining Company |
1 |
1862–1877 |
North Yorkshire |
Lead |
| Grinkle Mining Co. Ltd. |
1 |
1899–1930 |
North Yorkshire |
Iron |
| Grinshill Stone Quarry |
1 |
|
Shropshire |
Sandstone |
| Grinton Mining and Smelting Company Limited |
2 |
1888–1895 |
North Yorkshire |
Lead |
| Grit and Gravel Company |
1 |
|
Shropshire |
Lead |
| Groby Granite Company |
1 |
from 1865 |
Leicestershire |
Granite |
| Grove Colliery Company |
1 |
1852–1952 |
Staffordshire |
Coal |
| Groverake Mining Company |
1 |
from 1930 |
County Durham |
Fluorspar, Iron, Lead |
| Guest and Company |
1 |
1901–1902 |
Caerphilly |
Coal |
| Guest, Keen and Nettlefolds Limited |
5 |
1902–1931 |
Merthyr Tydfil, Caerphilly, Rhondda Cynon Taf |
Coal |
| Gunnislake Clitters Mining Co. |
1 |
1877–1889 |
Cornwall |
Arsenic, Copper, Tin |
| Gurnos Anthracite Colliery Company |
1 |
1900–1923 |
Powys |
Coal |
| Gwaun-cae-Gurwen Colliery Company |
2 |
1874–1928 |
Neath Port Talbot |
Coal |
| Gwaunclawdd Abercrave Collieries Limited |
1 |
1913–1927 |
Powys |
Coal |
| Gypsum Mines Limited |
1 |
1903–1936 |
East Sussex |
Anhydrite, Gypsum |
MineArchive