Aeromagnetic map of the McNair-Grand Portage area, northeastern Minnesota

Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey

doi:10.3133/gp639

USGS · gp639

Aeromagnetic map of the McNair-Grand Portage area, northeastern Minnesota

Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey

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Geophysical Investigations Map Report

Source-reported bounding extent: 47° to 48.1667° latitude; -91.7667° to -89.533° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey. 1969. Aeromagnetic map of the McNair-Grand Portage area, northeastern Minnesota. https://doi.org/10.3133/gp639

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Aeromagnetic map of the McNair-Grand Portage area, northeastern Minnesota

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