-10- Table Il. Research Projects Involving Measurements of Atmospheric Radioactivi Strontium-90 and other fission products Scripps Institution of Oceanography (rain, air) Mt. Washington Observatory - AEC (cloud, rime, precipitation) Armour Research Foundation - AEC (particle size fractions) Carbon-14 Los Alamos Scientific Laboratory Scripps Institution of Oceanography U.S. Weather Bureau - Argonne National Laboratory Lamont Geological Observatory Tritium University of Chicago Weizmann Institute (Israel) Scripps Institution of Oceanography Radon Argonne National Laboratory U.S. Geological Survey (sponsored by Div. of Research) DOE ARCHIVES [2