| Reference | {Deposit:: AUSTIN GEORGE S., 1972, INDIANA GEOLOGICAL SURVEY, PAGE 13.}{Deposit:: CLAY IS MINED FROM 25 FEET OF VERY CLAYEY TILL.}{Deposit:: MSHA INSPECTION REPORT 11-7-79.}{Deposit:: MINERAL INDUSTRIES ESTABLISHMENTS IN INDIANA, U.S. BUREAU}{Deposit:: OF MINES, 1-8-79.}{Deposit:: RCF LIST 10/81} |