Reference | {Deposit:: BETHANY FALLS AND WINTERSET LIMESTONES}{Deposit:: SEVERAL ADJACENT ABANDONED QUARRIES IN SE NE SEC 2 AND}{Deposit:: NW SEC 12}{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, PP 481-484} |