Geophysical investigations through vertical magnetic gradient for highlighting and positioning buried metal objects. Since the land presented many anomalies we used electromagnetic locator with passive and active signal. In these condition has been identified electrical line that crossed the perimeter and buried concrete blocks.
For land with high electromagnetic noise, the results of many buried metal objects, we recommend several complementary geophysical methods to disseminate geophysical signal. Profile positioning was performed with high precision RTK GPS.