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  5. Minnesota

Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Mason CityM/R-D121.9 m 9.60 km2,602 km
WasecaM-Dz304.8 m above ground1.60 km13,759 km
Southeastern surveys part 3M-D200 m above ground1.00 km km
St PaulM/R-D121.9 m 9.60 km2,348 km