1. 1 Status of WV Rules and Technology Options Randall Harris W. Va. Office of Miners’ Health Safety and Training April 25, 2007 ARC Lexington Meeting 1

2. 2 Carbon Monoxide Kills

3. 3 Provide an alternative to barricading for miners who have tried to escape and couldn't – SHELTER IS LAST RESORT Within 1,000 feet of working face Provide life-support for maximum likely number of miners on section Currently approved 6 models from 5 companies with two more in review Shelter Plans due 4-16-2007 WV § 56-4

4. 4 Structural Requirements 15 PSI Overpressure 300ºF Flash Fire 4

5. 5 Life-Support Requirements Asked for Minimum 48 hours Got 96 hours plus

6. 6 LifeShelter™

7. 7 Dräger Escape Shelter™ 7

8. 8 Kennedy Shelter™ 8

9. 9 Mine Refuge Chamber™ 9

10. 10 Fresh Air Bay™ & Mine Refuge Chamber™ 10

11. 11 LifePod™

12. 12 Mine Safehouse™ 12

13. 13 Communication Challenges

14. 14 WV § 56-4 Wireless – miner not connected by wire Two-way communications to each miner in at least two separate airways Tracking each miner in relation to known points prior and in escapeways after Operators submit Communication/Tracking Plan by July 31, 2007 Understand needs and thought through risks Survive accident or be quickly repairable Communication center operator needs red-hat card

15. 15 Few Spectrum Options

16. 16 Through the Earth

17. 17 Mid Frequency

18. 18 Leaky Feeder VHF & UHF

19. 19 Leaky Feeder Coverage Enhancement

20. 20 Wi Fi

21. 21 Mesh Challenge

22. 22 Next Generation…Redundancy