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Federal
Airborne geophysical survey: Jacobsville Contact South, Michigan Survey Part 1 of 2
Department of the Interior —
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude,... -
Federal
Airborne geophysical survey: Michigan Coop South '63
Department of the Interior —
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. In the earlier days of surveying,...