Excerpt from California Mineral Production for 1927 Some of the data relative to properties and uses of many of the minerals herein described are repeated from

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

Excerpt from California Mineral Production: And Directory of Mineral Producers for 1943 It is the endeavor of the staff of the State Division of Mines (formerly