DEPARTMENT OF THE NAVY

(a) IM 143 PD or Self Indicating Pocket Dosimeter is an ionization chamber pocket dosimeter. Measures gamma radiation and X-ray radiation. Since ships are outfitted with only enough for approximately 10% of the crew, these dosimeters should be issued to the senior member of any group of people (e.g. a watchsection,) this person can then be ... ................
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