STP 834 addresses the need for clarification of terminology used to refer to groups of minerals; namely asbestos, silica, and talc. The specific minerals in each group are defined, along with their impact on human health. This volume includes a comprehensive glossary for health related silicates defining 46 terms. STP 834 serves as a practical handbook for the scientific community, regulatory agencies, medical and legal professionals, industry management, the media, and the general public.