| Reference | {Deposit:: BETHANY FALLS LIMESTONE OF SWOPE FM}{Deposit:: ADJACENT OLD QUARRY IN SE SEC 4}{Deposit:: MSHA 1981 METAL-NONMETAL MINE FILE REF}{Deposit:: IOWA DOT GEN AGGREGATE SOURCE INFO 1981}{Deposit:: IOWA ST HWY COMM AGGREGATE RESOURCE LISTING 1977}{Deposit:: IOWA GEOL SURVEY 1906 ANNUAL REPORT VOL 17, P 498} |