North Coastal Extension (CA)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Fairchild Aerial Surveys, Inc.
Date flown 12/64
Line spacing 0.8 and 1.6 (km)
Altitude 152.4 (m) above ground
Total distance 241 (km)
References
Counties Lake - Mendocino
Overlapping surveys

Data: Magnetic (M-Dz)