Sherbrooke-Lewiston '81 W. (VT-NH)

Survey type R-D (radiometric; collected in digital form)
Flown by USGS
Date flown 09/81
Line spacing 0.8 (km)
Altitude 91.44 (m) above ground
Total distance 261 (km)
References
Counties Coos - Grafton - Caledonia - Essex
Overlapping surveys

Data: Magnetic, radiometric, very low frequency electromagnetic (M/R/V-D)