Word: tracers
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...December 1961 to mid-April 1962. The article indicates that the research was intended to determine the minimum dose of ordinary iodine needed to reduce contamination of the human body by radioactive iodine. As part of the research, approximately 60 children at the Wrentham State School were orally administered tracer doses of radioactive iodine over a period of weeks...
...With the increasing number of cyclotrons in operation and the wider use of radioactive compounds in quantities larger than for tracer work, the problem of possible dangers to the works from radiation must be considered," Warren's report on the study says...
...results were visible in the tracer fire illuminating Mogadishu's sky. This time the U.N. was one of the combatants. For four nights the Somalian capital echoed with deafening explosions as U.S. AC-130H ground-support planes and Cobra attack helicopters pounded the capital. Aidid's compound, arms caches and other locations took withering fire. Before U.N. ground forces advanced on his main base, a loudspeaker truck gave his gunmen several warnings to surrender. But soldiers came under fire as they moved in, provoking heavy retaliation from...
...expected. After days of blatant preparations, at 9 p.m. Eastern time on Friday, two AC-130H Spectre gunships and American Cobra attack helicopters thundered over Mogadishu on a mission of retaliation for the killings, one week earlier, of 23 United Nations peacekeepers. For the next several hours, flares and tracer bullets lit the predawn skies of the Somali capital as the aircraft pummeled six sites of strategic importance to the country's paramount warlord, Mohammed Farrah Aidid. U.S. forces hit Aidid's radio station, four weapons and ammunitions dumps, and an abandoned cigarette factory that had been used to fire...
...short-lived isotope, which is used as a tracer in medical research, left invisible spots that were detected with a Geiger counter. A clean-up crew found traces on the floor and in the elevator...