| Survey type | M-D (magnetic; collected in digital form) |
|---|---|
| Flown by | Aero Service Corporation |
| Date flown | ?/87-?/89 |
| Line spacing | 0.4 and 0.5 (km) |
| Altitude | 150 (m) above ground |
| Total distance | 44,500 (km) |
| Counties | Clay - Kittson - Marshall - Norman - Pennington - Polk - Red Lake - Roseau - Cass - Grand Forks - Pembina - Traill - Walsh |
| Overlapping surveys |
| Download | magnetics.htm |
|---|