Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Cut BankM/R-D121.9 m 9.60 km2,222 km
Great FallsM/R-D121.9 m 4.80 km4,330 km
Northwest Montana '65M-Dz2743 m (barometer)3.20 km6,598 km
Northwest Montana '67M-Dz2743 m (barometer)3.20 km4,345 km
ShelbyM/R-D121.9 m 4.80 km3,242 km