Airborne geophysical survey Portland: Portland (ME-NH)

Survey type	M/R-D (magnetic; radiometric; collected in digital form)
Flown by	Texas Instruments
Date flown	09/75-10/75
Line spacing	8 (km)
Altitude	121.9 (m)
Total distance	989 (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	Androscoggin - Cumberland - Oxford - Sagadahoc - York - Belknap - Carroll - Grafton - Hillsborough - Merrimack - Rockingham - Strafford - Sullivan
Overlapping surveys	Albany Bangor Bath Boston Glens Falls Lake Champlain Lewiston Berwick '55 Sherbrooke-Lewiston '80 New Hampshire West Southwest New Hampshire Rowe ARMS East '60 North-central N.H. '68 Central New Hampshire '68 Central New Hampshire Portland Detail Glens Falls "B" '83 Glens Falls "B" '84

Metadata	Questions & Answers - Outline - Parseable text - XML
Download	PORTLAND.zip