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Sift the Clay
Sifting clay for earth blocks at Loreto Bay, Mexico

Before making the compressed earth blocks, the clay must be sifted.

Photo © Jackie Craven
The soil itself is the most important ingredient in earth block construction.

Earth Block Operations Director Jim Hallock knew that the soil at this Baja, Mexico site would lend itself to CEB construction because of its rich clay deposits. If you scoop up a soil sample here, you'll notice that you can easily form it into a firm ball that will dry hard.

Before manufacturing the compressed earth blocks, the clay content must be drawn from the soil. A backhoe mines the earth from surrounding hills at the Loreto Bay, Mexico plant. Then the soil is sifted through a 3/8 wire mesh. Larger rocks are saved to use in landscape design in the new Loreto Bay neighborhoods.

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