Photos from: Earth MRI scan for US critical minerals



A boom with orange ball-shaped instrument on the front of a helicopter.Geologist uses hammer to break a critical minerals sample off a rock in Alaska.University of Maine geologists hike through the forest at Pennington Mountain.Bright red radiometric hot spot that led to rare earths discovery in Maine.

U.S. Geological Survey

A helicopter with equipment for conducting the geophysical surveys at the heart of the Earth MRI program being carried out by the U.S. Geological Survey.



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