Gazetteer and Bibliography of the
Mines and Quarries of North Wales

Change Log

14 September 2020 The map display has been reimplemented to use Ordnance Survey's Data Hub map service and the Leaflet open-source JavaScript library. (This follows the announcement of the withdrawal of Ordnance Survey's OpenSpace product in 2021.) As a consequence of these changes the maximum map zoom level has been increased and the map can now be viewed using 1:25 000 mapping. Minor UI changes (including a change from bit-mapped map markers to SVG), code reorganisations and simplifications and minor bug fixes have been made. Some additional non-extractive sites have been added and minor corrections and other addtions to site data have been made.
14 July 2020 GB1900 sites have been reconciled with existing data where possible. Additional limited company details have been added from Board of Trade records.
26 May 2020 Search user interface, server CGI scripts, main data files and translation files moved to separate directories to aid system maintenance (no changes to functionality). A redirection page has been provided to replace the search landing page which has been moved by the file reorganisation. Postcode searches improved to allow full postcode to be used (previously only outward code part of postcode could be used). Facility added to allow search locations to be specified by latitude/longitude. Information about data aspects of the system and a READ ME file covering technical aspects made public with links from the Wilkinson home page.
4 May 2020 Cross-browser support improved: the user interface now provides uniform functionality across Apple Macintosh versions of Firefox, Google Chrome, Microsoft Edge, Opera and Safari.
26 April 2020 Further user interface changes. The ‘nothing found’ messages have been expanded to reflect the current query. The map display of site locations will now automatically pan and, if necessary, zoom out to ensure that all found locations are visible in the map window. ‘Nothing found’ messages in map view now display on the map. The ‘display as map’ menu choice is now disabled until the OS OpenSpace map API is loaded. (The OS OpenSpace map API is slow to load if it is not available in cache, so it is loaded after the site search page is displayed to the user. Previously, if the map view was selected before the API was loaded the change of view would fail silently.) Further code reorganisations and simplifications and minor bug fixes.
19 April 2020 User interface code reorganisations and simplifications to improve performance and aid maintainability (no changes to functionality). Minor inconsistencies corrected in query fields for persons, companies and organisations search. Minor bug fixes.
26 August 2019 Approximately 1,000 site entries from the GB1900 Gazetteer Project (the Great Britain Historical GIS Project) added. (See Copyright and Acknowledgements for more information.) At present only sites that are more than 1 km from existing gazetteer entries have been added; more entries from this data source will be made as and when they can be reconciled with existing neighbouring gazetteer entries.
27 July 2019 References from J R Foster-Smith’s The Non-Ferrous Mines of Flintshire (NCMRS Occasional Publication 7) 1974 and additional references and links to CPAT Clwyd-Powys Metal Mines Survey added. Minor additions and corrections to data. Minor changes to output formating of references to improve readabilty.
14 July 2019 References from J R Foster-Smith’s The Non-Ferrous Mines of Denbighshire (NCMRS Occasional Publication 5) 1972 added. Minor additions and corrections to data.
28 June 2019 Caernarfonshire references from J R Foster-Smith’s The Mines of Anglesey and Caernarvonshire (British Mining 4) 1977 added. Minor additions and corrections to data.
6 June 2019 Anglesey references from J R Foster-Smith’s The Mines of Anglesey and Caernarvonshire (British Mining 4) 1977 and Tony Oldhams’s The Caves and Mines of Anglesey 2006 added. Minor additions and corrections to data. Minor changes to some output formats to improve readabilty. Minor bug fixes.
2 February 2019 References from J R Foster-Smith’s The Mines of Merioneth (British Mining 6), 1977 and other sources added. Minor additions and corrections to data. Minor changes to some output formats to improve readabilty. Code simplifications and bug fixes.
2 December 2017 Map view retains state when switching to/from list or gazetteer view when location unchanged. Graig Ddu slate works and unnamed slate works at Tabernacle, Blaenau Ffestiniog added.
11 October 2017 Trials, un-named shafts, quarries etc. now shown with small icon on map view. Various additions and amendments to coal mines in Denbighshire. Some duplications, inconsistencies and errors in data removed.
9 August 2015 References to OS six-inch maps link to an image of the appropriate map (National Library of Scotland website). Some new person names added from BT 31 records. Some inconsistencies and errors in data removed. Entity file data reorganisation to improve maintainability. Code simplifications and bug fixes. Minor UI improvements with regard to drop-down menu choices.
1 February 2015 Some inconsistencies and errors in data removed. Code simplifications and bug fixes.
28 December 2013 Cross-reference handling enhanced so that links only shown if they lead to additional information.
25 December 2013 Improvements to formatting and appearance of results, code simplifications and enhancements to improve data maintainability, minor bug fix, duplicate entries and some errors removed from data.
7 April 2012 Minor enhancements to map display to improve usability, bug fixes.
22 August 2011 Interactive map display of mine locations added and other user interface changes to improve usability. A number of Denbighshire and Flintshire coal mines added.
19 August 2011 Correction of location of Nantyrdramis slate quarry.
23 May 2010 Hendre spar mine and Cilcen Lime Spar Co Ltd added.
30 April 2010 Correction of location of Cefndeuddwr.
15 December 2009 Additional information for Deer Park, Flagstaff and Dinmor quarries, Anglesey.
8 March 2009 Grid reference for Bethesda corrected. (Thanks to Gwyn Jones for problem report.)
26 December 2008 Minor quarry workings at SH61421667 and SH62221702 (Llanaber, Merioneth) added.
23 September 2008 Facility to display employment and production figures (where available) added. (Note: at present very few mines have this data recorded here.)
13 July 2008 Wimpey Quarry (Flintshire) added.
24 January 2008 Abeidinant, Angelog, Bultyslum, Cwmbach, Cwmmachne, Dinant, Droscull, Helenslwyd, Heworth Tantham, Talmigna, Tanygarreg and Ustrad, Tymawr mines added (see Bick, The Old Copper Mines of Snowdonia p. 8).
23 January 2008 Glyn Aber a.k.a. Rhiwbach drainage added added. Grid reference for Croesor quarry corrected. Notes added to Braichgoch and Gaewern, Croesor and Rhosydd and Cwmorthin and Oakeley to show underground connections. Mine search results notes – minor bug fixes.
21 January 2008 Black Park and Brynkinalt collieries, Tref-y-nant fireclay pit and Wynnstay quarry added.
3 July 2007 Mine search results references reformatted to be more readable and to use less space on screen. Sorting of references improved.
12 March 2007 Llangynhafal roadstone quarry added.
30 January 2007 Downloadable files removed because of problem of keeping them in sync with database. Search modified so that a search for lead will find lead, lead/silver, lead/zinc etc. Links to mine pages in CPAT Clwyd-Powys Metal Mines Survey added for Clwyd mines A–B. Asbestos level at SH559478 added. Trial level at SH687174 added.
23 December 2006 Grid reference for Nant Uchaf iron mine near Abergele added.
9 September 2006 Trial at SH609308 near Ffridd Llwyn Gurfal added.
29 August 2006 Gravel pit at SH587314 near Harlech added.
15 August 2006 Berwyn Phosphate mine added.
10 June 2005 Abergele Copper & Silver Ore Co Ltd, Abergele Copper Ore Co Ltd and Abergele Hoematite Co Ltd added.
31 May 2005 Halkyn United Mining Co and Lady Ann Silver Lead Mining Co Ltd added.
8 May 2005 On-line search facilities added.
2 May 2005 Parish CELYNIN removed from list of parishes. Celynin iron mine and Celynin slate quarry (both in 'Celynin' parish, Merioneth) changed to Llangelynin parish and note added for original parish record. Tal y fan quarry grid reference amended from SH744730 to accord with map evidence. New mine entry for level at SH744730. New mine entry for BAILEY HILL COLLIERY, MOLD.
15 October 2004 Entity listing modified so that company roles (e.g. Shareholder) now show the company (rather than mine) name. Mine listing modified so that company roles are not shown. Boston Lodge mine and Ynys Galch ironworks added. Spelling Tynycaeu mine corrected to Tyn y caeau and references added.
28 September 2004 PRO BT31 reference added for Australasian Alkaline Reduction & Smelting Syndicate Ltd. Entry for Point of Ayr colliery added. Cwt y Bugail added as alternative name for Manod Quarry.
22 July 2004 PRO and other references added.
18 June 2004 Corrections to listing of company year of incorporation and last year. Some additional references for Flintshire lead mines added.
7 June 2004 Corrections to 100km grid square prefix letters for mines in SJ and SN grid squares.
30 May 2004   Cross references between all mines and quarries at same location added.
2003   Initial version of system put on public server.

Return to Gazetteer front page