Sangamon County
Riverton area
Riverton, Spaulding, Dawson, Bissell, Barclay, Peerless, and the Old Decatur Road / FS area.
7 footprints17 shafts
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Franklin Found mine maps
Interactive coal mine footprint and shaft maps built from ISGS mapped mine layers, county mine directories, and available mine-note source cards.
Sangamon / Menard / Logan
North Sangamon / Athens
Sherman, Williamsville, Cantrall, Athens, and nearby mapped mines including uncertain ISGS shaft points.
17 mine indexes44 shafts
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Sangamon County
Springfield / Chatham / Auburn
Springfield, Woodside, Spring Creek, Chatham, Auburn, and nearby Sangamon County mine records.
23 footprint indexes53 shafts
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Mine features are approximate and intended for historical reference. Use each map's Layers panel to separate confirmed footprints, known shafts, uncertain points, and modern active mines where present.