Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
CumberlandM/R-D121.9 m 9.60 km2,726 km
Maryland Coop '70M-Dz1067 m (barometer)1.60 km5,359 km
Western VirginiaM-Dz152.4 m above ground0.80 km12,231 km
Northern West VirginiaM-D304.8 m above ground3.20 km6,855 km