the dredging improving environment rivers and channels city |
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navigate by keyword : bottom bucket canal channel city construction day design dredge dredger dredging earth environment equipment extraction fairway fleet floating fragment improvement improving industrial industry machine machinery multibucket propelled river ship shipping specialized summer system technical transport vessel water waterway work working |
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Fragment of multibucket dredger working to improvement of the water area and water protection zones of St. Petersburg. The dredging, improving the environment of the rivers and the channels of city. |
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