Wall Number | Country | State | Classification | Source Sort descending |
---|---|---|---|---|
13RB14 | United States | Iowa | Limestone | Charles City |
13RB39 | United States | Illinois | Limestone | Columbia |
11RA16 | United States | Iowa | Dolomite | Osage Sta. |
14LB14 | United States | Iowa | Dolomite | Osage Sta. |
11LB21 | United States | Missouri | Limestone | Paris |
10RB14 | United States | Indiana | Limestone | Stinesville |
7RA9 | United States | Alabama | Limestone | Tuscumbia |