| 1. | Coffer dams were sunk and forms constructed inside them while constant pumping occurred.
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| 2. | On 12 November 2010, the construction reached coffer dam river closure.
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| 3. | There should be enough time to build the two coffer dams to required heights,
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| 4. | Between them and the hull were compartments filled with cork and containing a coffer dam.
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| 5. | That's one reason why the coffer dam was employed.
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| 6. | To enclose the construction site, the coffer dam was built ( The Hennepin Canal ).
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| 7. | Before Marmot Dam could be removed, a temporary coffer dam had to be built upstream.
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| 8. | The existing dam was used as a coffer dam while workers poured concrete for the new dam.
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| 9. | Nyaminyami had struck again, destroying the coffer dam, the access bridge and parts of the main wall.
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| 10. | In the first phase a leak-proof coffer dam was constructed to isolate and dry the work area.
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