South NPR '77 (AK)

Survey type M-D (magnetic; collected in digital form)
Flown by Geophysical Service Inc. 
Date flown ?/77
Line spacing 9.6 and 16.1 (km)
Altitude 243.8 (m) above ground
Total distance 1,931 (km)
References
Counties North Slope - Northwest Arctic
Overlapping surveys

Data: Magnetic (M-D)