1. Mineral Resources
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  3. Magnetic anomaly
  4. Aeromagnetic surveys
  5. Indiana

Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Southeast Illinois '77M-D304.8 m above ground1.60 km12,231 km
VincennesM/R-D121.9 m 9.60 km2,761 km