Metal Stocks in Society – Scientific Synthesis - Unep Dtie

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Metal Stocks in Society – Scientific Synthesis 4 Table of Contents Prefaces ___________________________________________________________________________ 2 Table of Contents ___________________________________________________________________ 4 List of Figures ______________________________________________________________________ 5 List of Tables _______________________________________________________________________ 5 Abbreviations and Acronyms _________________________________________________________ 6 Executive Summary _________________________________________________________________ 9 1 Nature’s Non-Renewable, Non-Fuel-Resources ________________________________________ 10 2 The Concept of Stocks ________________________________________________________________ 12 3 Methodology for Metal Stocks in Society _______________________________________________ 14 4 A Review of Metal Stock Determinations _______________________________________________ 17 4.1 In-use Stocks _____________________________________________________________________________ 17 4.2 Stocks in Unmined Ores (“Resources of Metals”) _________________________________________ 20 4.3 Stocks in Tailings _________________________________________________________________________ 20 4.4 Stocks in Processing Facilities ____________________________________________________________ 20 4.5 Government Stocks _______________________________________________________________________ 20 4.6 Stocks in Manufacturing Facilities ________________________________________________________ 20 4.7 Stocks in Recycling Facilities _____________________________________________________________ 20 4.8 Landfill Stockpiles ________________________________________________________________________ 20 5 Outflows from In-Use Stocks _____________________________________________________ 22 6 Potential Users of In-Use-Stock Information _______________________________________ 23 7 Discussion and Challenges _______________________________________________________ 24 8 Conclusions ____________________________________________________________________ 27 References ________________________________________________________________________ 28 Appendices _______________________________________________________________________ 30
Metal Stocks in Society – Scientific Synthesis 5 List of Figures Figure 1. The Generic Life Cycle of a Metal, with Stock Locations Indicated ______________ 12 Figure 2. The Nickel Recycling Map ________________________________________________ 15 Figure 3. A Schematic Diagram of the Methodology for Calculating Outflows from In-Use Stocks ______________________________________________________ 22 Figure 4. Information Availability on In-Use Stocks of Metals __________________________ 24 List of Tables Table 1. Extant In-Use Metal Stock Estimations for the Major Engineering Metal _______ 17 Table 2. Extant In-Use Metal Stock Estimations for Precious Metals __________________ 18 Table 3. Extant In-Use Metal Stock Estimations for Specialty Metals __________________ 19
Page 1 and 2: U NITED NATIONS ENVIRONMENT PROGRAM
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Metal Stocks in Society – Scientific Synthesis - Unep Dtie

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