(5)
B,
Personnel measuring and protective devices
(a)
Film badges
(b)
Respirators
Uranium milling
Twenty-six mills employ about 4,000 people
Mills process about 20,000 tons of ore daily
Operations and associated hazards in the milling of uranium ore
a.
b.
Crushing
(1)
Extremely dusty operation
(2)
Very difficult to achieve 100% control of dust
(3)
Radon and daughter-product concentrations
Grinding
(1)
Relatively dust free operation
(2)
Possibility of radon and daughter products released
from grinding mill
ec.
Leaching process
(1)
Acid leaching
(a)
Potential nonradioactive hazard from generation of
arsine, phosphene, and hydrogen sulfide
(2)
d.
Carbonate Leaching
(a)
Carried out at high temperatures
(b)
Only hazard is possibility of thermal burns
Recovery of uranium
(1)
Ion exchange
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