Reference | {Deposit:: AUSTIN GEORGE S., 1972, INDIANA GEOLOGICAL SURVEY, PAGE 20.}{Deposit:: MESA HEALTH AND SAFETY INSPECTION REPORT APRIL 4-6, 1972.}{Deposit:: MSHA INSPECTION REPORT 5-21-81.}{Deposit:: CLAY AND SHALE ARE MINED FROM THE STAUNTON FORMATION.}{Deposit:: RCF LIST 10/81} |