Dahlgren (VA-MD)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by LKB
Date flown 06/75
Line spacing 0.8 (km)
Altitude 152.4 (m) above ground
Total distance 3,380 (km)
References
Counties Charles - Prince George's - Caroline - Essex - Fairfax - King George - Prince William - Spotsylvania - Stafford - Westmoreland - Fredericksburg
Overlapping surveys

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