| http://www.w3.org/ns/prov#value | - As here shown, the barriers comprise, along each bank, a fixed wall 10 of reinforced concrete, interlocking metal piles, or other suitable structure disposed for the major portion of its length at an angle divergent downstream from the adjacent bank; so that the downstream ends of the barriers l0 converge towards mid-stream but are spaced apart a distance sufficient to provide ample clearance for
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