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Application of Magnetic and Electromagnetic Methods to Locate Buried Metal

By Robert J. Horton

thumbnail image of Figure 1. Vertical magnetic gradient map

U.S. Geological Survey Open-File Report 03-317

Version 1.0
The USGS conducted a geophysical survey to locate buried metallic objects within a landfill on the U.S. Air Force Academy grounds near Colorado Springs, CO. Magnetic and electromagnetic (EM) methods were used to survey the landfill because they easily detect magnetic and conductive objects buried at shallow depths.

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