Reference | {Deposit:: AUSTIN GEORGE S., 1972, INDIANA GEOLOGICAL SURVEY, PAGE 18.}{Deposit:: MESA HEALTH AND SAFETY INSPECTION REPORT APRIL 11-12, 1972.}{Deposit:: A MILL IS LOCATED AT THE PIT SITE.}{Deposit:: CLAY AND SHALE ARE MINED FROM 12 FEET OF THE BORDEN GROUP.} |