Due to the explosion, the entire underground cave was collapsing!
Rocks, one after another, were tumbling down, with dust suspended everywhere.
It was so dangerous that evacuation should be immediate.
Lucille braved herself into the heart of the most severely collapsed area, the dust was so intense that she could barely keep her eyes open.
"Cough, cough, cough......"
Lucille was caught in a coughing fit, constantly shouting Joseph's name.
She could almost imagine that the mutants, upon discovering her and Joseph had found their hideout, must have hastened to take the hostages away. Joseph would have naturally tried to stop them, in the ensuing fight, the mutants must have detonated the cave to escape.
So, during the explosion, Joseph could have been affected, even injured!
Had he been buried by the collapsing rocks?