go critical

The drive went critical and shut down when we hit the gap.

It went critical for the first time June 30 1951.

But the new economic problems, which must not be allowed to reach crisis, make the choice of how far to go more critical.

But if it's that likely to go critical, I want three times the bonus.

She was the only woman present when the reactor went critical.

The reactor went critical for the first time on March 30, 1963.

They were evacuated by the police when the situation went critical.

If they don't go critical, it's probably not something to worry about.

"They wouldn't go into hiding again, now that things are going critical."

It went critical in 1965 and ran for four years.