| Survey type | M-D (magnetic; collected in digital form) |
|---|---|
| Flown by | Aero Service Corporation |
| Date flown | ?/89-?/91 |
| Line spacing | 0.5 and 5 (km) |
| Altitude | 200 (m) above ground |
| Counties | Anoka - Benton - Carver - Chisago - Hennepin - Isanti - Mille Lacs - Pine - Sherburne - Washington - Wright - Burnett - Polk - Saint Croix |
| Overlapping surveys |
| Download | magnetics.htm |
|---|