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Air-raid shelter
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Key terms: bunker protect pillbox world war shelter designed blast structure usually gun fire fortifications must trench provide normally underground door world war ii germany border width wave nuclear albania artillery facilities industrial constructed defence installations concrete inhabitants storage overburden post gallery maginot line walls ventilation prevent infobox style radiation frame surface buried cold blast wave thick plastic weapons trench system overpressure machine gun heat steel bar shock Search external links cited by footnotes on Wikipedia page Bunker: |
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