GSC Open File Release Notices
Archived information
The text below is an exact reproduction of the original release notice, which was often unilingual. It contains information that is not readily available elsewhere. The information on pricing and availability is out of date.
Release Notice Text
OPEN FILE 262
Airborne Radioactivity Maps and Profiles
Contour maps and profiles of radioactivity data obtained with the GSC gamma-ray spectrometer system are being released for the Blind River area of Ontario (41J). The release comprises seven contour maps at a scale of 1:250 000 showing total count, uranium, thorium and potassium concentrations, and U/Th, U/K and Th/K ratios, and profiles of the seven radioactivity parameters, at the same scale, for each of the 33 flight lines flown in the north-south direction at 5 km spacing.
This file is also available for inspection at the office of the Mines library, Ontario Ministry of Natural Resources, Whitney Block, Queen’s Park, Parliament Buildings, Toronto, Ontario. The material will be available for inspection from 1:00 p.m. E.D.T. May 1, 1975 (and equivalent local times) at other release points.
Copies may be obtained at the user’s expense by application to K.G. Campbell Corporation Limited, 880 Wellington Street, Ottawa K1A 6K7, Ontario.
{#819, March 1975 circular}
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