Copper River Project #6007

This project includes all of Gulkana and part of Talkneetna Mountains 3° quadrangles.

The documentation states that no regional field was removed, however, a residual
magnetic data field is present in the data set and the total field magnetics are 
missing.  The residual mag is probably diurnally corrected total field mag and,
therefore, is labeled as totmag in the magnetics file.

The radiometric and magnetic data sets do not correlate.  It appears different 
latitudes and longitudes were used as well as different flight line numbers. 
It seems as though the magnetics were more decimated than the radiometrics.  The 
rad contains tie lines whereas the mag does not.  The resmag in the rad file is 
likely to be totmag corrected for just diurnal.