Extraction Plan - Peabody Energy

Extraction Plan – North Wambo Underground Mine Longwalls 7 and 8TABLE OF CONTENTSSectionPage1 OVERVIEW OF THE EXTRACTION PLAN 11.1 PURPOSE AND SCOPE 11.2 STRUCTURE OF THE EXTRACTION PLAN 81.3 MINE PLAN AND SCHEDULE 91.4 SUBSIDENCE PREDICTIONS 141.5 SUBSIDENCE IMPACT PERFORMANCE MEASURES 171.6 SUBSIDENCE MANAGEMENT APPROACH 182 DEVELOPMENT OF THE EXTRACTION PLAN 212.1 REVIEW OF PREDICTIONS 212.2 RISK ASSESSMENT 222.3 CONSULTATION 243 SUBSIDENCE MANAGEMENT AND MONITORING 283.1 WATER MANAGEMENT 313.2 LAND MANAGEMENT 363.3 BIODIVERSITY MANAGEMENT 363.4 BUILT FEATURES MANAGEMENT 383.5 HERITAGE MANAGEMENT 443.6 PUBLIC SAFETY MANAGEMENT 463.7 REHABILITATION MANAGEMENT 483.8 MONITORING PROGRAM SUMMARY 484 IMPLEMENTATION 574.1 ADAPTIVE MANAGEMENT AND CONTINGENCY RESPONSE 574.2 REPORTING FRAMEWORK 604.3 REVIEW OF THE EXTRACTION PLAN 634.4 REVIEW OF OTHER MANAGEMENT PLANS 644.5 KEY RESPONSIBILITIES 645 REFERENCES 676 ABBREVIATIONS, ACRONYMS AND GLOSSARY 686.1 ABBREVIATIONS AND ACRONYMS 686.2 GLOSSARY 69LIST OF TABLESTable 1Extraction Plan RequirementsTable 2Key Mining ParametersTable 3Proposed Mining Schedule (Secondary Extraction)Table 4 Maximum Predicted Subsidence, Tilts and Strains for Longwalls 7 and 8Table 5Subsidence Impact Performance MeasuresTable 6Wambo Homestead Exclusion Zone Dimensions and Impact Risk to BuildingsTable 7Key Potential Consequences/Hazards Identified by the Subsidence RiskAssessmentTable 8Summary of Consultation with Government AgenciesTable 9Draft Management Plans Distributed for CommentTable 10 Surface and Sub-surface FeaturesTable 11 Water Management Issues Associated with the Extraction of Longwalls 7 and 8EP/SMP LW7-8 Rev B December 2012 Page viii