41. Russian experts say many have back entrances and ventilation shafts through which Taliban forces might escape. 42. The new company decided to cease production from No . 3, which became a ventilation shaft . 43. The two eventually resort to climbing through a ventilation shaft to a hallway with an elevator. 44. They end up sneaking through the ventilation shaft and find out that Pyro had followed them. 45. Kate then climbs into a ventilation shaft . 46. The new direct access ventilation shaft meant cutting off a considerable portion of the adjoining Criterion Restaurant. 47. At least one ventilation shaft for the underground gallery leading water to Mina dos Orf�o was disturbed. 48. For example, a massive ventilation shaft in the middle of the Santa Monica Mountains was not built. 49. A special ventilation shaft was also installed. 50. The working shaft for the shelter at Oval now functions as a ventilation shaft for the station.
