After samples from several different Illinois mining operations were collected and tested for fuel value, refuse from the now closed Marissa coal mine in Randolph County was used in a commercial demonstration at the Buzzi Unicem cement plant in Greencastle, Ind. Nearly 50 tons of refuse was dredged from the settling pond at the Marissa mine. The material was vigorously air-dried to make it flowable before shipment to the cement plant. About 80 tons of processed material was delivered to the cement plant for a 24-hour demonstration run.
Donald Broton, Senior Materials Scientist, and John Gajda, Principal Engineer, both at CTLGroup, co-authored this October, 2004 Coal Age article with Javed I. Bhatty.
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