A comprehensive preparatory textbook on the production of metals from their ores. The structure of previous editions has been preserved, but recent developments in new technology of the 1980s and their impact on the field have been incorporated. The treatment of mineral dressing, reaction mechanisms and hydrometallurgy has been strengthened. An appendix of worked examples supplements numerous examples in the text, and the book is comprehensively indexed and cross-referenced, emphasizing the interrelationship of the many topics covered in the book.