| Entry Type | Corporate |
| Corporate Name | Portland Colliery |
| Parent Body | Butterley Company |
| Place | Kirkby-in-Ashfield, Nottinghamshire |
| Epithet | coal mine |
| Dates | 1820-1921 |
| Authorised Form of Name | Kirkby-in-Ashfield, Nottinghamshire; Portland Colliery; 1820-1921; coal mine |
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