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Portland Detail (NH)

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Survey type M/R-D (magnetic; radiometric; collected in digital form)
Flown by Texas Instruments
Date flown 09/75-11/75
Line spacing 2 (km)
Altitude 121.9 (m) above ground
Total distance 643 (km)
References
Hill, Patricia L., Kucks, Robert P., Ravat, Dhananjay, 2009, Aeromagnetic and Aeroradiometric Data for the Conterminous United States and Alaska from the National Uranium Resource Evaluation (NURE) Program of the U.S. Department of Energy; Open-File Report 2009-1129

https://pubs.usgs.gov/of/2009/1129/
Counties Belknap - Merrimack - Sullivan
Overlapping surveys

Data: Magnetic, radiometric (M/R-D)

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