Figures

1.0 The Global Acid Rock Drainage Guide

List of Figures

Figure 1-1: Types of Drainage Produced by Sulphide Mineral Oxidation

Figure 1-2: Overall ARD Management Plan

Figure 1-3: Applying an Environmental Management System to ARD

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2.0 The Acid Rock Drainage Process

List of Tables

Table 2-1: Common Sulphides Known or Inferred to GenerateAcid when Oxidized (Plumlee, 1999)

Table 2-2: Typical NP Values and pH Buffering Ranges for Some Common Minerals (Jambor, 2003; Blowes et al., 2003; BCAMDTF, 1989)

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List of Figures

Figure 2-1: Roman Portal with Acid Rock Drainage – Spain

Figure 2-2: Generalized Conceptual Model of Sources, Pathways and Receiving Environment at a Mine or Processing Site

Figure 2-3: Ficklin Diagram Showing ARD, NMD, and SD as a Function of Dissolved Base Metal Concentrations (Plumlee et al., 1999)

Figure 2-4: Diagram Showing ARD, NMD, and SD as a Function of Sulphate Concentrations

Figure 2-5: Ficklin Diagram Showing Selected Principles that Govern Mine Water Quality (Plumlee et al., 1999)

Figure 2-6: The Global Sulphur Cycle (Stumm and Morgan, 1996). Global Fluxes in Millions Tons of Sulphur per Year and Inventories in Millions Tons of Sulphur

Figure 2-7: The Biogeochemical Sulphur Cycle

Figure 2-8: Model for the Oxidation of Pyrite (Stumm and Morgan, 1981). (The numbers in brackets refer to the reactions presented in Section 2.6.4)

Figure 2-9: Schematic Illustration of Normalized Sulphide Oxidation Rates with and without Bacterial Mediation (Robertson and Broughton, 1992)

Figure 2-10: Stages in the Formation of ARD (Broughton and Robertson, 1992). (The numbers in brackets refer to the reactions presented in Chapter 2.6.4.)

Figure 2-11: Schematic Illustration of Factors that Affect Sulphide Oxidation and Modify Mine Drainage during Transport

Figure 2-12: Schematic Illustration of the Effect of Temperature on Normalized Sulphide Oxidation Rates (Robertson and Broughton, 1992)

Figure 2-13: Two-Stage Process for Pyrite Oxidation in a Tailings Impoundment (Wunderly et al., 1996)

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3.0 Corporate, Regulatory, and Community Framework

List of Tables

Table 3-1 : Risk Management Procedure for Mine Sites (modified from Lee, 1999)

Table 3-2: Integrating Risk Approach into ARD/ML Management

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List of Figures

Figure 3-1: Framework for ARD management

Figure 3-2: Hierarchical relationship between Global, National and Local Elements of the Framework

Figure 3-3: Conceptual ARD Management Framework

Figure 3-4: Sustainable Development Balance

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