The investigation dredges up many dark secrets in the local community, a community represented here by a tapestry of interconnected characters. |
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Hydraulic dredges are still in use although the effort directed on razor clams has declined. |
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This would hamper the use of large hopper dredges and large transport barges. |
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The act of remembrance, even uninvoked remembrance, dredges up early trauma to experience anew. |
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Old dredges stood ready to open the navigation channels should there ever be enough water. |
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Scallop, oyster and crab dredges consist of steel frames and chain-mesh bags that plow through the seabed to sift out target species. |
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Greater possibilities of improving selectivity may exist with respect to dredges, lines and traps. |
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The transport vessels are trailing suction hopper dredges with barges. |
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The use of boat dredges and of hydraulic dredges shall be prohibited within 0,3 nautical miles of the coast. |
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But after mechanical fishing dredges destroyed the oyster reefs early in the 20th Century, the water became increasingly turbid and oxygen deficient. |
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Gears used are bottom trawls, dredges, purse seines, surface longlines, driftnets and artisanal gear. |
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More supposed fuel for the anti-commercial fishing fire is the idea that fishing with trawls and dredges changes the bottom, and that such changes are not acceptable. |
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Deposits of gold, tin, titanium and platinum are mined by ground sluicing, and by excavating with dredges and loaders. |
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Meanwhile, dredges are pumping away the sand that has turned the Murray's mouth into a series of brackish ponds. |
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The main damage associated with farming shellfish is caused by harvesting them with dredges, which ruin the seabed. |
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The mushroom anchor is shaped like an upside-down mushroom and is used widely as a permanent mooring for lightships, dredges, and lighters. |
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These employees, like the rest of the on-shore mining personnel, worked long shifts, the dredges being lit up at night with high wattage floodlights. |
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She could spend a morning describing how the Army Corps of Engineers, with massive dredges, keeps the rivers flowing along the paths shown on maps. |
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The use of towed dredges and trawl nets fisheries at depths beyond 1 000 m shall be prohibited. |
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The maximum breadth of dredges shall be 3 m, except in the case of dredges for sponge fishing. |
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After the Civil War, dredges were legalized, and harvesting exploded to 5 million bushels that year. |
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Mining dredges were imported from America to work the placer gold of the river. |
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An adjustment plan for vessels licensed to use dredges to fish clams in the South region was adopted in 2008, with the aim of reducing the size of Southern area fleet. |
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Port Metro Vancouver dredges the main channel only. |
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Member States shall adopt, by 31 December 2007, management plans for fisheries conducted by trawl nets, boat seines, shore seines, surrounding nets and dredges within their territorial waters. |
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I see that the first towed hopper dredges are now at work. |
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Fishing dredges are used as a technique for catching certain species of edible clams and crabs. |
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The use of towed nets, encircling nets, purse seines, dredges, gillnets, trammel nets, bottom-set longlines and longlines for highly migratory species shall be prohibited for leisure fisheries. |
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The dredges can suck up fish eggs and small fry. |
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Also effective are air-lift dredges, which operate by injecting compressed air into a submerged pipe at about 60 percent of the depth of submergence. |
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Cottagers found their docks on dry land and marina owners were forced to call in dredges to dig channels so they could keep their businesses open. |
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All types of dredges may have living quarters on board. |
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The use of dredges for sponge fishing shall be prohibited within the 50 m isobath and shall not be undertaken within 0,5 nautical miles of the coast. |
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Fisheries in Canada are conducted using a variety of fishing gear, including bottom and mid-water trawls, dredges, gillnets, longlines, trollers, hook and line and traps. |
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For example, scours of different sizes and depth resulting from fishing trawls and scallop dredges have been observed in almost every corner of the Gulf shallower than 165 meters deep. |
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Having been suspended in 1995, rutile and bauxite mining operations resumed in 2006 although rutile production was scaled down in 2008 following the collapse of one of the two dredges used to mine the mineral. |
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Scallops are most commonly harvested using scallop dredges or bottom trawls. |
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These have included restrictions on fishing times, closed seasons, and limitations on the number of dredges permitted. |
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During the 1980s and 1990s auger dredges were primarily used for sludge removal applications from waste water treatment plants. |
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Today, auger dredges are used for a wider variety of applications including river maintenance and sand mining. |
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Fishing dredges are used to collect various species of clams, scallops, oysters or crabs from the seabed. |
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These dredges have the form of a scoop made of chain mesh, and are towed by a fishing boat. |
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Either way, as the vessel dredges, excess water in the dredged materials is spilled off as the heavier solids settle to the bottom of the hopper. |
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While dredges collect oysters more quickly, they heavily damage the beds, and their use is highly restricted. |
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The crew used a variety of dredges and trawls to collect biological samples. |
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The dredges consisted of metal nets attached to a wooden plank and dragged across the sea floor. |
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Floating dredges are used to mine alluvial deposits. |
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Today only small operators work the placers, the days of the great dredges being past, at least until there is a marked increase in the price of gold. |
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Some hopper dredges are designed so they can also be emptied from above using pumps if dump sites are unavailable or if the dredge material is contaminated. |
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From a tactical point of view, working in unprotected waters is less hospitable for floating cranes, construction tenders, dredges and equipment barges. |
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The first widely used auger dredges were designed in the 1980s by Mud Cat Dredges, which was run by National Car Rental, but is now a Division of Ellicott Dredges. |
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