This is a book which views and presents the gold and other precious metal extractions from a new wider angle, extending to include both the Earth and the metallurgical sciences. Some of the topics are: - Gold and silver mineral occurrences in their ores; - Photomicrographs of refractory and amenable mineral/ores; - How irregular gold and silver distributions may be used for the efficient planning of the extraction process; - Microanalytical techniques; - Descriptions or uranium and many base metals for comparison. The book is written for a broad audience, from the manager of operations to the metallurgist, field geologist and other earth scientists, to the professor and student alike.