part 4

A second blast just as severe as the first happened November 24 and a third explosion was recorded two days later.

Nicholas Davidson, an attorney for the families, said the findings are important to them.

"Obviously gives them some comfort," he said.

"A lot of us cried, and I'm still crying inside, but it's part of the healing and we will move on," said Bernie Monk, father of miner Michael, who died in the mine.