Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Magnetic anomaly > Aeromagnetic surveys > Minnesota
| Survey name | Type | Altitude | Spacing | Line miles | # pts |
|---|---|---|---|---|---|
| Northern Wisconsin '96 | M/V-D | 500 AG | 0.5 miles | 1,700 | 219,107 |
| Elk River ARMS | 500 AG | 1 mile | 10,000 | 28,963 |