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Designer proposed more bolts in Big Dig

Managers cut numbers in half

By Scott Allen and Sean P. Murphy
Globe Staff / September 17, 2006

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Big Dig managers were so confident of the strength of the bolts that would hold up the heavy, concrete ceiling in the Interstate 90 connector tunnel that they successfully pressured the ceiling's designer to cut in half the number of bolts suspending each ceiling hanger, according to a 1998 memo obtained by the Globe. (Full article: 1636 words)

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