a comparison of the concentrations of tungsten-185 and strontium-90 in the air at various times after the 1958 u.s. nuclear tests in the pacific indicatesthat debris from this test series contributed less than 10 percent of the total sr ( 90 ) content of the ground-level air at miami and washington during the spring of 1959 .
C0041703
u.s
C0043038
washington