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  2. Cobalt-60 - Wikipedia

    en.wikipedia.org/wiki/Cobalt-60

    Cobalt-60 (60 Co) is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. [ 3 ] [ 4 ] : 39 It is produced artificially in nuclear reactors . Deliberate industrial production depends on neutron activation of bulk samples of the monoisotopic and mononuclidic cobalt isotope 59

  3. 1962 Mexico City radiation accident - Wikipedia

    en.wikipedia.org/wiki/1962_Mexico_City_radiation...

    A typical cobalt-60 capsule, comprising: (A) An international standard source holder (usually lead), (B) a retaining ring, and (C) a teletherapy "source" composed of (D) two nested stainless steel canisters welded to two (E) stainless steel lids surrounding an (F) internal shield (usually uranium metal or a tungsten alloy) that protects a (G) cylinder of radioactive source material.

  4. Samut Prakan radiation accident - Wikipedia

    en.wikipedia.org/wiki/Samut_Prakan_radiation...

    A radiation accident occurred in Samut Prakan Province, Thailand in January–February 2000. The accident happened when an insecurely stored unlicensed cobalt-60 radiation source was recovered by scrap metal collectors who, together with a scrapyard worker, subsequently dismantled the container, unknowingly exposing themselves and others nearby to ionizing radiation.

  5. Ciudad Juárez cobalt-60 contamination incident - Wikipedia

    en.wikipedia.org/wiki/Ciudad_Juárez_cobalt-60...

    The truck, now contaminated by the cobalt-60, subsequently suffered a mechanical failure upon Sotelo's return from the junkyard and remained immobile near his home in Ciudad Juárez for 40 days. [4] Meanwhile, at the junkyard, the use of electromagnets for handling the scrap caused the cobalt-60 granules to spread throughout the yard.

  6. Columbus radiotherapy accident - Wikipedia

    en.wikipedia.org/wiki/Columbus_radiotherapy_accident

    In 1974, Axt calibrated a cobalt-60 teletherapy unit with an incorrect decay curve. The calculated decay rate was more rapid than the real source, leading to a dose rate underestimated by 10–45% and an overestimated treatment time. [2] [3] No other calibrations and checks were performed between May 1974 and January 1976. Axt later attributed ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Clinton Power Station - Wikipedia

    en.wikipedia.org/wiki/Clinton_Power_Station

    After retrieval from the core, processing can extract the cobalt-60 for manufacture into a useful radiation source. The vast majority of the world's cobalt-60 supply - over 80% - has traditionally come from Canada's National Research Universal (NRU) reactor at Chalk River. In general, the supply situation for medical and industrial isotopes is ...

  9. Salted bomb - Wikipedia

    en.wikipedia.org/wiki/Salted_bomb

    In Nevil Shute's novel On the Beach (1957), cobalt bombs are mentioned as the cause of the lethal radioactivity that is approaching Australia. The cobalt bomb was a symbol of man's hubris. [13] In City of Fear (1959), an escaped convict from San Quentin State Prison steals a canister of cobalt-60, thinking it contains drugs. He flees to Los ...