During the [http://en.wikipedia.org/wiki/Munich_crisis Munich crisis], local [[authorities]] dug trenches to provide shelter. After the [[crisis]], the British Government decided to make these a permanent feature, with a [[standard]] [[design]] of precast concrete trench lining. Unfortunately these turned out to [[perform]] very poorly. They also decided to issue free to poorer households the Anderson shelter, and to provide steel props to create shelters in suitable basements. | During the [http://en.wikipedia.org/wiki/Munich_crisis Munich crisis], local [[authorities]] dug trenches to provide shelter. After the [[crisis]], the British Government decided to make these a permanent feature, with a [[standard]] [[design]] of precast concrete trench lining. Unfortunately these turned out to [[perform]] very poorly. They also decided to issue free to poorer households the Anderson shelter, and to provide steel props to create shelters in suitable basements. |