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For many years, staff of the Indiana Geological Survey (IGS) have collected data on various physical and chemical parameters of Indiana coals. The Indiana Geological Survey Coal Quality Database (ICQD) is the most comprehensive source of coal quality information. It was compiled using seven overlapping databases, checked for redundancy, and repeated records were eliminated. The database was purged of repetitions based on location. A total of 392 records do not have exact locations (county only), however, we decided to retain these because they had reliable values. Records were completed and updated. This database was published in 2005 as Indiana Geological Survey Open-File Study 05-02. Since publication in 2005, the ICQD has been updated whenever new data was available. As of January 2011 the database contains 3,186 data points. It is now published as Indiana Geological Survey Report of Progress 40. Because additional data obtained by the Indiana Geological Survey on an annual basis, interested users may wish to contact the Indiana Geological Survey for information on these more up-to-date sources. |