Name	Parish	From	To	Comments
Ladywood	Thornhill Lees, Dewsbury	1921	1928	Abandoned March 1928.
Ladywood	Mirfield, Dewsbury	1877	1881	Sinking from 1877 to 1878.
Laister Dyke	Laisterdyke, Bradford	1856	1899	Sunk 1858 by Joseph Cliffe. Reopened in 1911 but standing in 1912 and 1913 and abandoned in 1914.
Laitham Brow	Huddersfield	1855	1860
Landmere	Northowram, Halifax	1909	1922	L. Naylor; W. & J. Glossop 1920 onwards. 14 years. This small mine is listed only from 1909 to 1922, and only worked in eight of those years. Not more than 13 men employed. No plans available.
Lands Head	Northowram, Halifax	1866		Haley & Haley
Lands Head	Northowram, Halifax	1911	1913	B. Ore. Sinking in 1911 and 1912
Lane	Huddersfield	1855	1869	On 1st edition 1/10560 sheet - Sow Pit
Lane	Leeds	1881	1883
Lane Bottom	Denholme, Keighley	1920	1920	Abandoned
Lane Dyehouse	Dewsbury	1854	1871
Lane End	Flockton, Wakefield	1955	1988	See Denby Grange, Lane End
Lane End	New Mill, Huddersfield	1878	1914	Standing 1904 to 1913. Abandoned 1914
Lane End	Clayton West, Huddersfield	1927	1941	Discontinued April 1934 and August 1935
Lane Head	Brighouse	1897	1902	L. Chadwick & Co.
Lane Head	Brighouse	1911	1915	J. Brooke & Sons; Brookes Ltd 1913 onwards
Lane Head (c)	Brighouse	1897	1899	J. Cliffe (See Garden Road)
Lane Head (j)	Brighouse	1878	1915
Lane Side	Shelley, Huddersfield	1856	1869
Lane Side (a)	Adwalton, Leeds	1902	1911	Standing in 1909 and 1910 and abandoned in 1911 until 1921. Abandoned 1922.
Lane Side (b)	Drighlington, Leeds	1894	1894
Lane Side (c)	Cumberworth	1905	1905
Lane Side or Bell String	Kirkheaton, Huddersfield	1927	1930	Abandoned March 1930. Fireclay, Better Bed, abandoned 22/02/1930, plan 10241.
Lanes Wood	Gomersal	1865	1899
Langbaurgh	Great Ayton	1887	1950
Langhouse	Worrall, Sheffield	1907	1920	Formerly called Birtin. Abandoned in 1910 and standing in 1911 to 1914. Reopened 1919 to 1920.
Latham Lane	Gomersal, Leeds	1854	1863
Law	Southowram, Halifax	1897	1898	J. Farrar & Sons
Law	Huddersfield	1854	1863
Law Hill	Lightcliffe, Brighouse	1932	1949	W. & J. Glossop Ltd; Yorkshire Public Works 1946 onwards. 15 years. Electrified mine listed 1932-1946, but discontinued working in December 1939. Not over 16 men employed. Plan held by Calderdale Archives.
Leak Hall	Cumberworth	1901	1903	Abandoned in 1903.
Ledgard Bridge	Mirfield, Dewsbury	1854	1885	Called Ledgard from 1854 to 1858.
Ledston Luck	Kippax, Leeds	1910	1986	Sinking from 1910 to 1914. No.1 Pit was closed in 1933 and No.2 Pit closed in 1945. Redeveloped by the NCB in 1950. Closed on 31/10/1986.
Ledstone	Kippax, Leeds	1907	1911	Sand, abandoned 15/10/1911, plan 5771.
Lee Pit	Holbeck, Leeds	1884	1898	Disused by 1908 - near Beeston Royds.
Lee Top	Allerton, Guide Moor	1887	1896	D. & C. Roper
Lee Wood	Thurgoland, Sheffield	1859	1873
Legram Lane	Horton, Bradford	1897	1899	R. Roper
Lepton	Huddersfield	1894	1899
Lepton Edge	Lepton, Huddersfield	1968	1988	Closed in August 1964 and used as a Pumping Station from 1968 to 1988.
Lepton Edge	Lepton, Huddersfield	1894	1964	Closed in August 1964 and used as a Pumping Station from 1968 to 1988.
Lewden Bridge	Worsbrough Dale, Barnsley	1894	1915	Working in 1874 and 1875? Standing in 1910 and 1911 and abandoned in 1915
Leyburn	Leyburn, Hawes	1897	1900	Abandoned. No plans, only a trial hole.
Lidgett	Tankersley, Sheffield	1883	1911	Abandoned in 1911
Lightcliffe	Halifax	1920	1921	Plan (dated 1864) held at Railway Engineers Office. Standing 1922 to 1926.
Lightcliffe	Halifax	1854	1872
Lightcliffe (c)	Halifax	1869	1873
Lightcliffe (g)	Southowram, Halifax	1920	1925	Standing from 1923 to 1925.
Lilley Clough	Whiteley, Huddersfield	1858	1860	On 1st edition O.S. 1/10560 sheet.
Lime House	Halifax	1863	1871
Lindale Hill	Wakefield	1901	1903	Abandoned in 1903.
Linfit	Kirkburton, Huddersfield	1855	1894	On 1st edition O.S. 1/10560 sheet. Linked to a mill by a tramway.
Linfit Hill	Kirkburton, Huddersfield	1901	1914	Abandoned November 1914
Linfit Lane	Huddersfield	1892	1901
Listerwike, Low Pit	Shibden, Halifax	1855	1865	Plan probably held by the Rail Authority Engineers Office at Derby
Little Clough	Huddersfield	1856	1856
Little Don	Stocksbridge, Sheffield	1942	1950	Fireclay, Pot Clay, abandoned 21/08/1947, plan 14244.
Little Gomersal	Gomersal	1854	1887	On 1st edition O.S. 1/10560 sheet.
Little Green	Liversedge, Dewsbury	1855	1867
Little Horton	Bradford	1863	1871
Little Matlock	Stannington, Sheffield	1901	1928	Abandoned June 30th 1928. High Matlock - Ganister, abandoned 30/11/1912, plan 6038.
Little Whiteley	Drighlington, Leeds	1901	1923	Not listed from 1905 to 1915.
Liversedge	Dewsbury	1854	1858
Liversedge (a)	Liversedge, Dewsbury	1865	1875
Liversedge (b)	Liversedge, Dewsbury	1867	1879
Liversedge Foundry	Liversedge, Dewsbury	1861	1863
Lockwood Common	Huddersfield	1855	1883
Lodge	Morley, Leeds	1874	1903	Sinkinf from 1874 to 1878. Abandoned in 1903.
Lodge Farm	Hunsworth, Bradford	1884	1889
Lodge Mill	Kirkheaton, Huddersfield	1890	1930	Abandoned March 1930
Lofthouse	Outwood, Wakefield	1873	1981	Sinking from 1873 to 1882. Closed in July 1981.
Lofthouse Estate	Lofthouse Park, Wakefield	1936	1940	Abandoned June 1941.
Lofthouse Park	Lofthouse, Wakefield	1922	1922	Opened December 1922 and closed at the end of the month. Abandoned February 1923. Abandoned March 1927
Loftshaw	Ughill, Sheffield	1948	1950	Fireclay, Pot Clay or Stannington, abandoned 28/03/1949, plan 14456.
Long	Oakenshaw, Bradford	1883	1884
Long Close	Brighouse	1897	1913	Midgley & Roper. 17 years A relatively small mine, continuously worked from 1897 until end of listing in 1913. Not over 29 men. No plans available. Site unknown. Might be near Closes Road SE141224 or in one of the Brighouse Closes SE138222
Long Royd	Rastrick, Brighouse	1879	1886	Thornton & Midgley
Long Royd	Rastrick, Brighouse	1881	1887	Nowell & Robson
Long Royd	Rastrick, Brighouse	1879	1917	Bentley & Kaye & others. 21 years. Mine plans show first shafts sunk in 1879. Continuous working until 1917, when it was considered worked out. Up to 114 men employed. Good detailed plans. Originals, held by Thornhill Yorkshire Estates and NCB Small Min
Longlands	Ossett, Wakefield	1910	1923	Abandoned May 1923.
Longroyd	Rastrick, Brighouse	1882	1917
Low Ash	Sheffield	1878	1879
Low Close	Holbeck, Leeds	1907	1931	Abandoned August 1915. Reopened 1927 and abandoned August 1931.
Low Elsecar	Elsecar, Rotherham	1855	1871
Low Flatts	Lightcliffe, Brighouse	1876		Ledgard Naylor. A group of mines. Records confused.
Low Flatts	Lightcliffe, Brighouse	1876		Midgley & Illingworth; T. Illingworth 1881
Low Flatts	Lightcliffe, Brighouse	1876		Illingworth & Midgley; Hardy, Hainsworth. Howard and Mackerill 1878; ?Mackrill and Co. 1879 onwards
Low Laithes	Ossett, Wakefield	1855	1927	Discontinued 17/05/1927 and abandoned 26/06/1928.
Low Level	Arkengarthdale	1926	1932	Discontinued May 1932
Low Level Pit	Muker	1887	1893
Low Matlock	Stannington, Sheffield	1920	1945
Low Moor Lane Drift	Woolley Moor, Barnsley	1956	1973
Low Slack	Hepworth, Holmfirth	1893	1893
Low Street	West Ardsley, Leeds	1884	1885	Sinking from 1884 to 1885
Low Stubbin	Rotherham	1871	1988	Closed in 1918 and abandoned in July 1920. Used as a Pumping Station from 1961 to 1988.
Low Tunnel	Cumberworth, Huddersfield	1921	1922	Closed July 1922
Low Wincobank	Wincobank, Sheffield	1876	1877	Sinking in 1876.
Low Wood	Shipley, Bradford	1875	1877
Lowe Wood	Stainboro'	1903	1916
Lower Cliffe	Denby Dale	1924	1929	Abandoned April 1929
Lower Cumberworth	Huddersfield	1875	1885
Lower Denby	Denby Dale	1921	1921	Abandoned December 1921.
Lower Denby Opencast	Dewsbury	1957	1961
Lower Green Farm	Brighouse	1898	1902	Exors. of H. Westwood; Collins & Morris, 1899
Lower Hall	Kirkheaton, Huddersfield	1893	1894
Lower Holmhouse	Huddersfield	1873	1881	Sinking from 1873 to 1878.
Lower Knight Royd	Northowram, Halifax	1860		Jagger & Jagger
Lower Shibden	Shibden, Halifax	1870	1887
Lower Shibden (a)	Shibden, Halifax	1885	1892
Lower Wincobank	Wincobank, Sheffield	1873	1883
Lowood Wharncliffe	Sheffield	1888	1893
Lowther	Leeds	1855	1858	Including Preston Main
Lowther's	Kippax, Leeds	1855	1858	On 1st edition O.S. 1/10560 sheet.
Loxley Common	Loxley, Sheffield	1902	1904	Abandoned 1904
Lumb Lane	Liversedge, Dewsbury	1877	1896	Sinking from 1877 to 1887. Abandoned in 1903.
Lumb Wood	Drighlington, Leeds	1856	1886	Reopening in 1913 - See Spring Gardens.
Lundhill	Wombwell, Barnsley	1968	1969	Used as a Pumping Station from 1968 to 1969.
Lundhill	Wombwell, Barnsley	1855	1869	Sunk 1855.