Southeast Arizona Project 6005

This project, flown in 1974, was one of the earliest.  These are the original magnetic data.  Later,  
the data were broken up into quadrangles and fill-in lines for the quadrangles were flown in 1977.  In 
about 1977 the original data were further processed with the fill-in lines and the IGRF was removed.

The radiometric data are available only in the individual quadrangle files.