Word: cofferdam
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Dates: during 1900-1909
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...Charles River Basin Commission awarded the contract for building the dam and lock in the Charles River to the Holbrook, Cabot, and Rollins Corporation. The basis of the award was $801,-507.50. In the work so far piles have been driven under the lock in the Boston cofferdam and under the sluices in the Cambridge cofferdam. A few piles also have been driven along the sea wall and in the canals to strengthen them in order that the dredging may be carried to a greater depth...