Transactions of Society for Mining, Metallurgy, and Exploration, Inc, Volume 316

acid analysis apatite approved paper average belt bentonite biosolids blocks bolts calcite carbon cells chalcopyrite chemical circuit coal concentrate copper copper extraction cost cover system determine drilling dust effect energy Engineering equipment evaluation factors feed Figure flocculation flotation grade grinding increase industry installed iron ISC3 leaching load material measured ment metal Metallurgy method microtomography mill minerals monitoring NIOSH operation optimization oxidation oxygen paper is invited parameters particle Pascua Lama peer-reviewed and approved pellets percent phosphate pillar plant potential pressure production pyrite ratio reclamation recovery reduce rock roof fall samples scheduling shaft shown in Fig silica simulation slag slurry SME Annual Meeting Society for Mining solution sphalerite stress submitted to SME sulfide surface Table tailings temperature thiourea tion underground variables velocity waste xanthate zeta potential