Concord-Denton '57 (NC)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 10/57
Line spacing 0.8 (km)
Altitude 152.4 (m) above ground
Total distance 3,380 (km)
References
Counties Cabarrus - Mecklenburg
Overlapping surveys

Data: Magnetic, radiometric (M/R-Dz)