Sludging is a very simple well drilling method developed in ancient India but still used extensively in developing countries, where capital is scarce, but manpower abundant. A pipe is moved up and down in a hole filled with water (mud). Every time the pipe hits the bottom, some soil material is loosened and suspended into the drilling mud, which i...
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(sluj´ing) settling out of solid particles from solution. sludging of blood intravascular agglutination of erythrocytes into irregular masses, interfering with circulation of blood.
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