The Springfield Coal Member of the Petersburg Formation is the primary coal seam mined in Indiana. The Indiana Geological Survey has been collecting physical and chemical data and mapping the Springfield Coal for many years. This publication is the most comprehensive digital compilation of geologic information about the Springfield Coal in Indiana that is currently available from the Indiana Geological Survey. The database is accompanied by an interactive application that is a visual presentation of the Springfield Coal Member. It allows users to interactively search, explore, and compare data on coal properties. These data are important for regional coal-quality evaluations and can be used by the public, industry, and state and federal governments.
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