Clarence Dally (1865-1904)

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  • In 1904,Thomas Edisonís assistant, Clarence Dally, became the first X-ray pioneer to die from X-rays.
  • He was involved in Edisonís early work with x-rays.
  • Dally used no shielding since he was not aware of penetrating ability of the newly discovered "X-rays."
  • His flesh became ulcerated from repeated exposures.
  • His hair fell out in clumps over time.
  • Dally underwent multiple amputations of both arms in an effort to stem the progression of radiation damage.
  • All efforts were unsuccessful due to the enormous amount of exposure he received.


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