Reference | {Deposit:: PLANT LOCATED IN GRATIOT COUNTY; HOME OFFICE IN CHICAGO}{Deposit:: MI GEOL SUR 1977 ANNUAL MINERAL PROD DIR P23}{Deposit:: MINERALS YEARBOOK, 1977, PAGE 2}{Deposit:: PLANT PRODUCES MAGNESIUM CHLORIDE & OTHER MAG. COMPOUNDS}{Deposit:: PLANT CLOSED FOR ENVIRON. INFRACTIONS & SITE RAZED.} |