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The deeper portions of the Illinois Basin are the focus of this investigation because this area contains strata that are sufficiently deep, porous and permeable, and...
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View within SubmissionGathering Resources...From the site: "[L]inks to the digital coal resource shapefiles available from the ISGS Coal Section. The listed shapefiles are the same ones that were used to construct the...-
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View within SubmissionGathering Resources... -