Mining historian Kerby Jackson introduces us to a classic mining publication on copper sulfide ores by J.D. Clark. First published in 1913, it has been unavailable for over a century. Topics include the definition and types of ore enrichment, the oxidation of copper ores, the precipitation of metallic sulfides. Also included are the results of dozens of lab experiments pertaining to the enrichment of sulfide ores that will be of interest to the practical...