This site covers the history of coal mining in the UK. It includes a glossary of mining terms, photographs, maps and much more. The searchable National Database of Mining Deaths in Great Britain by Ian Winstanley lists 164,000+ names. There are also mine location maps for Great Britain and the Isle of Mann.
NOTE: This site is not longer online but it has been archived by Archive.is. which is a time capsule for web pages. It takes a 'snapshot' of a webpage that will always be online even if the original page disappears. It saves a text and a graphical copy of the page.