She should have realized then; one didn't bolt a steel gate on an empty room.
Someone was cautiously approaching the lighted area outside the steel gate in the wall!
She leaned on the brick wall by the steel gate and took a deep breath.
They followed it about a quarter of a mile, then pulled up at a steel gate barring the road.
The steel gate of the plant was closed and locked for the night.
As he yanked it open, he saw a change in the prison's great steel gate.
There are computers now, in a room protected by a steel gate.
The wall was broken only by a huge steel gate, at present open but well guarded.
She was pulling a steel gate shut behind us.
They slid around the steel gate and started to run.