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TABLE OF CONTENTS <br />ABSTRACT <br />INTRODUCTION <br />THE CHEMICAL NATURE OF MINE DRAINAGES <br />The Weathering of Rocks <br />The Weathering of Ore Minerals <br />The Secondary Reactions - Other Sulfides <br />Microbes and Catalysis <br />Summary of Weathering <br />MINE EFFLUENT POLLUTION <br />Health Standards <br />Biotic Standards <br />Effluent Standards <br />Summary and Opinion <br />PHYSICAL FACTORS-AFFECTING DRAINAGE QUALITY <br />Ore Petrology vs. Water Quality <br />ter Quality <br />• Ground Water Hydrology v <br />Ore Occurrence vs. Water Quality <br />Summary <br />ANALYSIS OF MINE WATERS <br />The Basic Tests <br />Conductivity of Mine Drainages <br />Tests for the Nature of the Water <br />Tests for Compliance to Regulations <br />Tests for Maintaining Quality Control <br />Summary <br />SUGGESTIONS FOR WATER MAINTENANCE <br />Water in Underground Operations <br />Water in Above-Ground Operations <br />Process Water <br />Conclusions <br />ACKNOWLEDGEMENTS <br />REFERENCES <br />APPENDIX - ANALYTICAL METHODS <br />Page <br />i <br />1 <br />3 <br />3 <br />9 <br />14 <br />16 <br />18 <br />18 <br />20 <br />20 <br />23 <br />25 <br />25 <br />29 <br />35 <br />39 <br />40 <br />40 <br />42 <br />46 <br />50 <br />51 <br />54 <br />55 <br />56 <br />58 <br />63 <br />65 <br />66 <br />71 <br />0