Written in language that non-geologists can easily understand, this book provides basic information about the lunar regolith and simulants. It explains how simulants are produced, what sources exist, and what processes are used for their production. It emphasizes the cost structure of simulants and the limitations of existing models. Chapters cover terrestrial sources of simulant components and processing technologies for production of simulants. The text supplies figures, photographs, charts, a glossary, and extensive references for further study.