| ventilation system | 11.32 | And the ventilation system is run by the wind. | ||
| ventilation duct | 1.12 | Clean the ventilation ducts to remove dust and insect debris. | ||
| ventilation shaft | 1.12 | At least two cars were set on fire, and smoke billowed from ventilation shafts. | ||
| ventilation fan | 0.59 | Rooftop ventilation fans blew fumes. | ||
| ventilation pipe | 0.59 | Ventilation pipes and sluices were chopped off at several places. | ||
| ventilation tube | 0.59 | Ventilation tubes snaked everywhere. | ||
| ventilation hole | 0.46 | Over the next few hours ventilation holes were poked in the walls. | ||
| ventilation equipment | 0.39 | Investigators have blamed negligence and faulty ventilation equipment. | ||
| ventilation hood | 0.26 | It has checked for radiation, poked into drain traps and ventilation hoods. |