[thecabal]

The only way they could know that it was an accident for sure is if they know what the accident was. And have they said what accident occurred? Did someone smoke a cigarette somewhere they shouldn't have? Or run a truck into something they shouldn't have? Or turn on or of a valve the wrong way? What was the accident?

Without a doubt. However, given the severity of the blast, is there anyone there who is in a state to tell the authorities what that accident might have been?

[Canard]

"However, given the severity of the blast, is there anyone there who is in a state to tell the authorities what that accident might have been?"

There have been some people interviewed on Sky who were working on the site at the time, presumably the police have also spoken to them.