Decatur (IL)

Survey type M/R-D (magnetic; radiometric; collected in digital form)
Flown by High Life - QEB, Inc.
Date flown 09/80-10/80
Line spacing 9.6 (km)
Altitude 121.9 (m)
Total distance 2,726 (km)
References
Counties Bond - Cass - Champaign - Christian - Clark - Coles - Cumberland - Douglas - Effingham - Fayette - Jasper - Logan - Macon - Macoupin - Menard - Montgomery - Morgan - Moultrie - Piatt - Sangamon - Shelby
Overlapping surveys

Data: Magnetic, radiometric (NURE) (NURE)