Word: lanthanum
(lookup in dictionary)
(lookup stats)
Dates: during 1990-1999
Sort By: most recent first
(reverse)
...spring day in 1950, U.S. scientists perfecting techniques for tracking Soviet atomic tests packed a conventional bomb with radioactive material -- probably lanthanum-140 -- and exploded it in the atmosphere near Los Alamos, New Mexico. No injuries were reported, but the fallout reached populated areas at least 70 miles away...