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Warning: This is not intended to be an exhaustive history of the companies listed, but an
indication of the changes of ownership and the links between companies and directors in
those companies. Only collieries, pits etc. in the North of England are shown - the
companies may own other properties etc. outside this area and there may have been other
changes of ownership etc. for which we currently do not have details.
Entries added or updated since 01 Jun 2008 are highlighted thus: 
| | Company | Company Details |
|---|
| |
National Coal Board (N.C.B.) |
|
|
Naworth Coal Co. |
1923 |
| |
Naworth Collieries Co. |
1933 |
| |
Naworth Collieries Co. Ltd. |
1940, 1947 |
| |
Netherton Coal Co. Ltd. |
1923, 1933, 1940, 1947 |
| |
New Brancepeth Colliery Co. Ltd. |
1940, 1947 |
| |
New Butterknowle Colliery Co. |
|
| |
New Copley Collieries Ltd. |
|
| |
New Hargill Hill Coal Co. Ltd. |
|
| |
New Harperley Collieries Ltd. |
|
| |
New London Lead Co. Ltd. |
|
| |
New Parkside Mining Co. Ltd. |
|
| |
New Tranwell Colliery Co. Ltd. |
1923 |
| |
Newbiggin Colliery Co. Ltd. |
1923, 1933, 1940, 1947 |
| |
Newton Mines Ltd. |
|
| |
Nicholas Wood & Partners |
1842, 1854, 1858, 1859, 1860, 1862, 1863, 1864 |
| |
North Beechburn Coal Co. |
|
|
North Bitchburn Coal Co. Ltd. |
1923, 1933 |
| |
North Bitchburn Fireclay Co. Ltd. |
1940, 1947 |
| |
North Brancepeth Coal Co. Ltd. |
1870, 1923, 1924 |
| |
North End Colliery (Cockfield) Ltd. |
1923 |
| |
North Green Hurth Mining Co. Ltd. |
|
| |
North Hetton Coal Co. |
|
| |
North Hetton Coal Co. Ltd. |
|
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North Lonsdale Iron & Steel Co. Ltd. |
|
| |
North Walbottle Coal Co. Ltd. |
1923, 1933, 1940, 1947 |
|
North Wylam Colliery Co. Ltd. |
1923, 1933 |
| |
Northern Coal Mining Company |
1850 |
| |
Northern Mineral Co. Ltd. |
|
| |
Northumberland Quarries Ltd. |
|
| |
Northumbria Mining Co. Ltd. |
|
| |
Norwood Colliery Co. Ltd. |
|
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