"Part of your duty is to prevent unauthorized access to the reactor chambers, isn't this so?"

Ahead of them, the tube opened onto the reactor chamber.

Only one of the reactor chambers is actually running the station.

The reactor chamber's 2000-ton lid was lifted by the steam explosion.

He drifted through an inner wall and found himself looking down into the reactor chamber.

We can't get to the reactor chamber from up here.

According to this, it will take us nearly two hours to drill down through the rock to the reactor chamber.

He told the pilot to keep an eye on the astrocompass, then took the elevator down to the reactor chamber.

He turned and followed the passageway all the way back to the reactor chamber.

The door to the reactor chamber was open.