Plenmeller Colliery (Plenmeller with Whitfield) - Source of Reference
The information on this website is based on a range of published and unpublished works. Below is a list of the source of information used in writing this record.
(1) RCHME Data Exchange 1997 (NMR No: NY 76 SW 52)
(2) This record includes National Record of the Historic Environment Information provided by Historic England on 4 January 2021 licensed under the Open Government Licence [http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/]
(2a) Ordnance Survey Map OS, 1st edition, 6", Northumberland 92, 1865
(2b) Ordnance Survey Map OS, 2nd edition, 6", Northumberland 92, 1898
(2c) RCHME/EH/HE Aerial Photographers comment