These miners are experienced, they are well-trained. We are just praying they had an opportunity to put their training to use.

We don't want to be energizing anything if it's in an atmosphere with combustible gases.

It's a very slow, careful process.

It was the readings they were taking of the atmosphere indicating they were not equipped to go further.

That just adds to the mystery of what happened when the production crew went underground.

That just adds to the mystery of how this happened. It was inspected as required by the regulations, and it was clean, and an hour later, there was this explosion.