what does a dredger do?
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they use a vacuum type machine called a dredger to replenish the beaches after erosion, and probably has other uses.
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A divining rod. It also has been used to find water, power lines, and other valuable elements located in soil. \n\nIt is speculated that it's merely a magic trick.
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Salt water. We use to clean rust off metal using kool-aid type mix because of the acid in it. Eats the rust away.
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Try sieving it - the sand will pass through the gravel will stay behind.
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Wrong kind of ice game. A sweeper is a position in curling. Sweeping helps with getting the stone down to the house where the skip wants it placed (in a nutshell).
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B.  As the matter settles in the bottom of the basin.\n\n"There are a wide range of techniques that can be used to remove the fine solids, micro-organisms and some dissolved inorganic and organic materials. The choice of method will depend on the quality of the water being treated, the cost of the treatment process and the quality standards expected of the processed water" - wikipedia
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if you stick around them long enough, you'll eventually see a big ol' truck come by and remove the waste (usually with a huge hose/vaccum thing). from there, it'll get taken and added to a sewer system somewhere, or a waste treatment plant.
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If your specification does not prevent it, a detergent, dispersing agent, or other wetting solution may be added to the water to ensure a thorough separation of fine material from the coarser particles.
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One word:  COST.  Just to dredge a couple of feet worth of silt in a large riverbed can cost in the hundreds of millions (See Hudson river dredging).  And then moving all the silt can cost a few more, especially since your plan supposes that the silt be carried quite a distance inland to achieve the desired effect.  Who's going to pay for that?  Which government(s), and whose tax dollars?
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they pump that drilling mud down the inside of the drill shaft and the mud pushes the drill shavings up the hole outside the shaft. the rig colects the mud and filters the cutings out. they then recycle the mud so it can be reused
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A type of engineer who specializes in the movement and transport (both natural and man made) of water. They can do anything from build dams to city sewers or movement of other liquids besides water in a plant setting.Somebody who likes to get wet a lot. Hydrologist ia a science dealing with their properties, distribution, and circulation of water an and below the earth's surface and in the atmosphere.
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fisherman\noil rigger
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http://www.watertiger.net/RO/how_ro_works.htm\nyou find it here
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They have a key role to play in marine ecosystems and erosion of shores.
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It is a mixture of two of the above.\nFirstly it was made to roll up above the knee when scrubbing the deck. It also doubled as a float by tieing the legs and using it as a lifejacket.
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Eraser is just a soft rubber abrasive, which gently scrubs the top layer of paper, removing a little of paper together with graphite particles. Clumps of used rubber, mixed with paper and graphite are produced, as you probably have noticed.
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The dredgers, who used boats to drag metal dredges across the bottom, could harvest large numbers of clams much faster than could the handrakers, who used their own muscle power to harvest quahogs with bullrakes and tongs\n\nSignificantly improved bullrakes, capable of harvesting quahogs from as far down as 70 feet, appeared in the early 1970s