Retrieved 13 September The only direct enemy damage to the site was done 20—21 November by three bombs probably intended for Bletchley railway station ; Hut 4, shifted two feet off its foundation, was winched back into place as work inside continued. Vanden Posted August 1, The work was tedious and demanded intense concentration; staff got one week's leave four times a year, but some "girls" collapsed and required extended rest. It was added to the National Register of Historic Places in
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