Making of a cutoff wall
A construction worker lifts a bag of Bentonite (high quality clay material) into place to mix it with water, creating a slurry pond. The slurry mix is then pumped via tubing along the top of the levee and into a trench being excavated for creation of a seepage cutoff wall. The slurry mix prevents the cutoff wall trench from caving in while being excavated.

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Photo by: J. Paul Bruton |  VIRIN: 210527-A-PZ119-0281.JPG