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A wall material, and method of preparing a wall material of soils and vegetable materials

Image Number 4 for United States Patent #4947611.

A wall board structure is formed of one of pulverized straw, pulverized chaff and pulverized palm material having a maximum dimension of from 1 to 3 mm. The pulverized material is mixed with a substantially equal quantity of clay. A fibrous material is added to the mixture, the fibrous material including one or more of palm material fibers, hemp fibers and shredded straw, the fibrous material having a length of from 3 to 5 cm. The mixture of pulverized material and clay and the added fibrous material is poured into a form and then dried. The form preferably includes means for forming one of recesses and through holes in the poured mixture.

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