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Performance Coal Company
Upper Big Branch Mine-South
Massey Energy Company
Mine ID: 46-08436
Fatal Underground Mine Explosion
April 5, 2010
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Reports
Summary of Investigation
Mine Accident Scenario Video
Appendices
- Entire Set of Appendices (64.3 MB)
- By Appendix
- Appendix A – List of Deceased and Injured Miners
- Appendix B – Map of the Mine
- Appendix C – List of Massey’s Corporate Structure and Employees
- Appendix D – List of Personnel Who Exercised Their Fifth Amendment Rights
- Appendix E – Mine Rescue Personnel and Teams Responding
- Appendix F – UBB Boreholes
- Appendix G – Accident Investigation Protocols
- Appendix H – Post-Accident Mapping Team Map
- Appendix I – PIL No. 110-V-8 Procedures for Copying Photographs
- Appendix J – Mine Dust Results
- Appendix K – Inspection History
- Appendix L – Mine Map Showing Direction of Primary Forces and Mine Dust Sampling Areas
- Appendix M – Seismic Events in Southern West Virginia
- Appendix N – WVDEP Surface Blasting
- Appendix O – Geochemistry of Natural Gas and Coalbed Methane
- Appendix P – Reconstruction of Ventilation Map
- Appendix Q – Petrographic Analyses
- Appendix R – Water Supply System to the Longwall Shearer Dust Sprays
- Appendix S – Sediment Analysis from Water Baskets and Spray Nozzels
- Appendix T – Detailed Discussion of Elimination of Electrical Ignition Sources
- Appendix U – Testing Results for All Equipment Tested at A&CC
- Appendix U-1 – Executive Summary of Investigation of Remote Control Units
- Appendix U-2 – Executive Summary of Investigation of Longwall Lighting System Components
- Appendix U-3 – Executive Summary of Investigation of Electrohydraulic Shield Control Components
- Appendix U-4 – Executive Summary of Investigation of Longwall Communication System Components
- Appendix U-5 – Executive Summary of Investigation of Portable Methane and Multi-gas Detectors
- Appendix U-6 – Executive Summary of the Investigation of Power Supply, Amplifier Battery, Tracking Tag, and Tag Reader Components Associated with Pyott-Boone Tracking Boss Tracker System and Minecom UHF Leaky Feeder System
- Appendix U-7 – Executive Summary of Investigation of Koehler-Bright Star Model 5100 and 5200 Series Cap Lamps and Cap Lamp Components
- Appendix U-8 – Executive Summary of the Investigation of Seven Power Air Purifying Respiratory (PAPR) Helmet Battery Assemblies and Pieces
- Appendix U-9 – Executive Summary of Investigation of Low-Energy Non-Permissible Electrical Items (Watches and Calculators)
- Appendix U-10 – Executive Summary of Investigation of Machine-Mounted Methane Monitors
- Appendix U-11 – Executive Summary of Investigation of High-Energy Non-Permissible Electrical Items
- Appendix U-12 – Executive Summary of Investigation of a Nelson-Kellerman Anemometer
- Appendix U-13 – Executive Summary of Investigation of Portable Radios
- Appendix U-14 – Executive Summary of Investigation of Pyott-Boone CO Monitors
- Appendix U-15 – Executive Summary of Investigation of Programmable Logic Controller Components
- Appendix V – Vaisala National Lightning Detection Report 258028
- Appendix W – Mine Electrical System
- Appendix X – Examination of Components of JOY Mining Machinery JNA Control System
- Appendix Y – Executive Summary of Investigation of a Digital Video Recorder (DVR)
- Appendix Z – Mine Map Showing Extent of Flame, Incombustible Content and Coke
- Appendix AA – Results of Proximate Analysis Testing
- Appendix AB – Rock Dust Crew Notebook
- Appendix AC – Belt Examination Book (4/1/2010) – 4/5/2010)
- Appendix AD – Belt Examination Book (3/16/2010 – 4/1/2010)
- Appendix AE – Additional Information on UBB MMU’s
- Appendix AF – Methane and Dust Control – Safety Precautions from Ventilation Plan
- Appendix AG – Specifications of Water Sprays
- Appendix AH – Roof Control Plan – Headgate and Tailgate Support
- Appendix AI – Stability Analysis of Gateroad Design
- Appendix AJ – Operation of the Minecom UHF Leaky Feeder System, Pyott-Boone Tracking, and Pyott-Boone Carbon Monoxide Monitoring System
- Appendix AK – Mine Emergency Evacuation
and Firefighting Plan
- Appendix AL – Summary of Examination of Three Refuge Alternatives
- Appendix AM – Examination and Testing of Self-Contained Selt-Rescuers (SCSRs)
- Appendix AN – List of Personnel Assisting in the Investigation
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