| Reference | {Deposit:: LOCATION INCLUDES SEVERAL PITS IN THE NW OF SEC 1}{Deposit:: IOWA ST HWY COMM AGGREGATE RESOURCE LISTING 1977}{Deposit:: USDA SOIL CONSERVATION SERVICE, 1975, SOIL SURVEY OF WEBSTER}{Deposit:: COUNTY, IOWA}{Deposit:: IOWA DOT MINE LOCATION BOOK, LOCATED IN IGS FILES} |