Environmentalists fear the possibility of major oil spills or a catastrophic explosion.

Unfortunately that had caused the destruction of the node itself, in a catastrophic explosion.

There was about to be a catastrophic explosion in here.

A supernova: a catastrophic explosion of an abnormally large star.

On June 5, 1941 a catastrophic explosion severely damaged the fortress and killed thousands of people in the city.

The sensors gave clear warning of a catastrophic explosion, which came two months later.

The crew partially flooded the magazine to prevent a more catastrophic explosion.

The resulting fire was quickly extinguished, preventing a catastrophic explosion.

If that happened, he said, there could be catastrophic explosions.

But the volcano, with a caldera 45 by 28 miles, has the potential for far more catastrophic explosions.