Inside the plant, levels of radiation in the abandoned reactor building rose to many times the lethal level.

So the concentration of carbon dioxide increased steadily toward lethal levels, and there was nothing we could do about it.

Unfortunately the lethal level does not increase in the same way.

Air pressure will have dropped to lethal levels in ten hours.

The weapon he was holding was set at the lethal level.

If one jams on it is less likely to heat the tank to lethal levels, too.

I estimate 3.7 days until it reaches lethal levels.

They could kill Quaid simply by increasing the sedative to lethal level.

Two days later her heart stopped, and the medical examiner determined that a lethal level of Lidocaine was the cause.

The top story reveals that radiation inside the nuclear plant is still at a lethal level of 10 sieverts per hour.