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Modeling the Project Coal Seams

Modeling the Project Coal Seams. The #6 Coal. Things that did not change Thickness of Brererton Limestone 20 ft Strength of Brererton Limestone Massive almost indestructible roof Good news for bolting Bad news for longwall Underclay 3 ft Strength of underclay 1000 psi

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Modeling the Project Coal Seams

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  1. Modeling the Project Coal Seams

  2. The #6 Coal • Things that did not change • Thickness of Brererton Limestone 20 ft • Strength of Brererton Limestone • Massive almost indestructible roof • Good news for bolting • Bad news for longwall • Underclay 3 ft • Strength of underclay 1000 psi • Compared to coal strength 2500 psi almost guarantees that floor strength will govern pillar design

  3. #6 Coal Things that Changed • Thickness of #6 coal • Likely guarantees both minable and unminable areas • Presence of Energy Shale • Sulfur content of #6

  4. Finding Fault Distance = 200 ft.

  5. Which Way Did It Go? Lines of Drill holes

  6. Do You See Anything? Distance 2,600

  7. Implication

  8. Might Be Where I Guessed Distance 6,600 feet

  9. Another Line

  10. I May See the Expected Pattern

  11. Searching for Channels

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