| Reference | {Deposit:: AUSTIN GEORGE S., 1972, INDIANA GEOLOGICAL SURVEY, PAGE 5.}{Deposit:: MESA HEALTH AND SAFETY INSPECTION REPORT SEPTEMBER 5, 1973.}{Deposit:: UNDERCLAY, COAL AND SHALE FROM THE UPPER BLOCK UNDERCLAY, TH}{Deposit:: BLOCK COAL AND GRAY SHALE.}{Deposit:: RCF AND CMS LISTS 10/81} |