Reference | {Deposit:: MSHA PRODUCERS LIST 11/82}{Deposit:: MALHOTRA, R, AND P.A. SMITH. DIRECTORY OF ILLINOIS MINERAL}{Deposit:: PRODUCERS-1974. ILLINOIS STATE GEOLOGICAL SURVEY, MINERAL}{Deposit:: NOTE 64, JULY 1976, P. 76.}{Deposit:: MSHA MINE LISTING 11-24-80.}{Deposit:: # COMMODITY IS SILICA SAND USED FOR FOUNDRY WORK & GLASS.}{Deposit:: RCF AND CMS LISTS 10/81} |