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  • '''Figure 10''' Map showing the thickness and mined areas of the Springfield Coal throughout Illinois. After Treworgy et al. (1999)'"`UNIQ--ref-00000017-QINU`"'. Straight lines separating polygons are artifacts of mapping protocol in original.  +
  • '''Figure 11''' Photographs showing thinl'''Figure 11''' Photographs showing thinly interlaminated shale and dull to bright coal along margins of the Galatia channel at the Prosperity Mine in Gibson County, Indiana. The lower frame is a closer view of the upper. The ruler is graduated in 0.1-ft intervals.he ruler is graduated in 0.1-ft intervals.  +
  • '''Figure 12''' Cross section of Galatia channel in American Coal’s Galatia Mine in Saline County, Illinois, based on core drilling and observations in mine.  +
  • '''Figure 13''' Photographs showing the r'''Figure 13''' Photographs showing the ragged, erosive contact between the light-colored siltstone of the Dykersburg Member and the underlying coaly shale of the Galatia Member in the channel crossing at the Galatia Mine, Saline County, Illinois. (a) View of the east wall of the entry. Coaly shale of the Galatia Member grades laterally northward (left, out of view) to shaly Springfield Coal. The pick is approximately 2 ft (60 cm) long. (b) Close-up view on the west wall of the entry. The heart of the Galatia channel is south (left) of view. Notice how erosion undercut the clay below layers of tough, fibrous peat. clay below layers of tough, fibrous peat.  +
  • '''Figure 4''' Diagram showing units between the Houchin Creek and Herrin Coals, including members newly named in this report.  +
  • '''Plate 1''' Map of the southeastern part of the Illinois Basin showing the thickness of the Springfield Coal, channels that affect the coal, and major structural features  +