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The industrial air ventilation system with supply fan in underground bomb shelter for a few thousand people Stock Photo - Alamy
![Canton Ticino. Toricella. Fallout shelter. Bunker. Ventilation system. Locked emergency door. Fridge. Child Stroller. | Didier Ruef | Photography Canton Ticino. Toricella. Fallout shelter. Bunker. Ventilation system. Locked emergency door. Fridge. Child Stroller. | Didier Ruef | Photography](https://www.didierruef.com/img-get/I0000eDNc9KhE.8Q/s/850/850/2020-06-22-Switzerland-Canton-Ticino-Toricella-Fallout-Shelter-Bunker-Ventilation-System-Locked-Emergency-door-Fridge-Child-Stroller.jpg)
Canton Ticino. Toricella. Fallout shelter. Bunker. Ventilation system. Locked emergency door. Fridge. Child Stroller. | Didier Ruef | Photography
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