| http://www.w3.org/ns/prov#value | - directing a flow of contaminated slurry into an inlet for contaminated slurry; cleaning said slurry by directing said slurry from said inlet and sequentially through an apparatus comprising: first screening means for carrying out a coarse filtering of said slurry; a tank for receiving liquid from said first screening means, said tank including mixing means for maintaining the contents of said tank
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