Officials warn of possible tunnel collapse following London attacks

07/10/2005 | Engineering News-Record ·

In the wake of the July 7 terrorist attacks on London's transportation system, officials are warning of the possible collapse of some part of the deepest tunnel affected by the attack. Police believe the bombs, which killed 50 or more people, contained about 10 pounds of explosives, and engineers are preparing to enter the system once forensic investigations are complete.

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