Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
HarrisburgM/R-D121.92 m 4.83 km4,852 km
Central & Northern Penn.M-Dz304.8 m above ground4.83 km12,714 km
PittsburghM/R-D121.92 m 9.66 km2,697 km