Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Clearfield-PhilipsburgM-Dz304.8 m above ground0.80 km5,774 km
Central & Northern Penn.M-Dz304.8 m above ground4.83 km12,714 km
WarrenM/R-D121.92 m 9.66 km2,667 km
WilliamsportM/R-D121.92 m 4.83 km4,828 km