Video of impact of blast at mine entrance

TV3 have a copy of a CCTV video of the impact at the mine entrance from the blast.

As I understand it the entrance is around 2 kms from where the blast originated. And that the 29 miners were all within say 200 metres of the blast.

While there is always some hope until the mine is accessed, I have to say that sadly I think the 29 probably perished in the blast.