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HIGHWALLING
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• People

Mgmt Skills
Communication
Reserves
Equipment
The Highwall Puzzle Pieces
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People

• Miner Operator 1
• Endloader Operator 1
• Mechanic 1
• Electrician 1
• General Laborer 3
• Foreman 1
• Total 8

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People

• Labor shortage
• Two twelve hours shifts / day
• Operate 4 6 days per week
• Maintenance 1 day per week
• Geographic locations change often
• Exposed to natures elements
• Perceived as a short term job

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Reserves

• Seam heights 2.5 28 ft
• Sustain a 1-3 year project
• 40,000 200,000 tpm
• Best if not previously auger mined
• Competent roof or ability to leave head coal
• Mine bottom up

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Equipment Spread

• Modified Continuous Miner
• Cascading Conveyor Cars
• Launch Vehicle
• Stacker - 54 inch belt
• Bulldozer - pushing coal
• 2 Endloaders loading unloading cars
  loading trucks
• Water Storage Tank

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Communication

• Real time info in the cab
• Web based storage
• Real time communication with
• home office (under development)

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Communication

• Real time info in the cab
• Web based storage
• Real time communication with
• home office (under development)

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Communication

• Real time info in the cab
• Web based storage
• Real time communication with home office (under
  development)

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Management Skills

• Long term mine planning
• Synchronization of equipment
• Synchronization of qualities/ markets
• Keeping available wall

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Longwall/Highwall Similarities

• Sole purpose is to cut coal
• Initial reluctance to rely on the technology
• Typically the lowest cost coal from a mining
  complex
• Keeping gate roads ahead is as challenging as
  keeping wall available

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Safety

• Mining Method NFDL
  Rate
• ADDCAR 0.00
• Surface Mining 1.59
• Underground Mining 5.72
• ( 3rd Qt 2005 - YTD)

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Productivity

• Mining Method
  TPEH
• Western Surface Mines 22.1
• ADDCAR 18.3
• Longwall Mines 5.0
• Eastern Surface Mines 4.2
• Non-Longwall Underground Mines 3.4
• ( 3rd
  Qt 2005 - YTD)

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Narrow Pit System

• Footprint reduced from 90 45 ft
• Continuous coal flow
• Fewer fines
• Horizontal vertical guidance
• 1,200 ft penetration
• Purchase lease contract mine

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ADDCAR Advantages

• Cascading cars
• Navigational System
• Volume

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Conclusion

• If you keep wall . you experience this