DENNIS SKINNER slammed posh Prime Minister David Cameron yesterday for sitting on his hands while one of Britain’s last coalmines went out of business.

The stalwart socialist MP launched a scathing attack on the Tory after Hatfield’s 420 miners were told it would be closed when they arrived for work on Tuesday.

Riled Mr Cameron, who has already been in hot water for ageist comments, retorted by branding Mr Skinner a “Jurassic Park” MP.