PREPARING CLAY

**Limiting references (this place does not cover):** - Mixers in general -> B01F - Concrete paving mixers combined with distributing devices -> E01C19/00 - Machines for preparing mixtures of road-metal with bitumen -> E01C19/10

**Glossary:** - Cement: includes plaster - Mixtures of cement with other substances: includes plaster - Clay: includes ceramic compositions