| Reference | {Deposit:: BETHANY FALLS LIMESTONE OF SWOPE FORMATION}{Deposit:: ADJACENT OLDER QUARRIES IN SECS 1,2, AND 12}{Deposit:: MSHA 1982 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 SURV 1916 ANNUAL REPORT VOL 27, P 162}{Deposit:: IOWA GEOL SURV 1906 ANNUAL REPORT VOL 17, P 486} |