dry-clay

Updated: May 7, 2025

These machines are still used, but they are hardly necessary, for the "dry-clay" brick machine will turn out a smooth brick in one operation. Another substance which is made of almost the same materials as brick is terra cotta. To make this, fire brick, bits of pottery, partly burned clay, and fine white sand are ground to a powder and mixed very thoroughly.

Eva March Tappan - Diggers in the Earth