There was no rumble of ventilator fans, just the constant whistle of the wind from above.

He locked his ankles around the rope and hung his head past the ventilator fan.

But here in the lab, the only sounds were of running water and the hiss of the ventilator fan.

"We'll bunk here after we find the power plant and get the ventilator fans going," Jacquemont said.

"That whirring sound must be coming from the ventilator fans."

The whirr of the ventilator fans was replaced with a buzzing sound that echoed up and down the tunnel.

The ventilator fans whirred, but they weren't adequate for the job.

For the heavy stuff, like the ventilator fans, they'd have to find the central power plant.

She climbed onto a box, boosted Kevin up and into a hole in the wall that probably once housed a ventilator fan.

Symptoms improved when crew members retreated to the shuttle or used personal ventilator fans while working aboard the station.