The book was used by Charles Bacon who studied at the University of Nevada in the late 1930s/early 1940s. Bacon worked at Bunker Hill Mines and Kellogg Idaho, before arriving in Australian in 1951. He worked for CN Myers, a company involved with paper converting. CN Myers was a family business (on Charles Bacon's maternal line). William Emmons was Professor and head of Geology and Mineralogy at the University of Minnesota; Director of Minnesota geological Survey; and previously Geologist, Section of Metalliferous Deposits, United States Geological Survey.Maroon soft covered book of 529 pages. Chapters include Magmatic Segregations, Pegmatities, Hypothermal Deposits, Sedimentary Depostis, Openings in Rocks, Metasomatic Processes, Mineral Associations and more.Inside front cover "Charles Bacon 1940 Lincoln Hall Ass. University of Nevada Reno, Nevada"charles bacon, mining engineering, metallurgy, university of nevada, mackay school of mines, geology, california