A spokesman for UK Coal, Andrew Macintosh, has told ITV News Central:
"As you can feel here, the place is empty. It's not how we wanted it to be at all. It's very sad and difficult news for our workforce and we're trying to get out and see as many of them as we can".
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The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Mostly cloudy tonight. Brighter with warm sunny spells tomorrow.
Another dry day with sunny periods, becoming locally very warm.