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Il y a 12 heures · Wood platforms were constructed on top of the caissons to support the cranes and derricks to be used to handle the wreck. Once the caissons were filled, water would begin to be drained from inside the cofferdam. Since construction of such a large, deep cofferdam had not been attempted before, the Corps said it would suspend draining from time to time to assess the performance of the caissons ...
