(1)
Results from chronic overexposure
Nonradioactive hazards
a.
Toxic effects may result from inhalation of uranium dusts
(1)
Toxie effects depend upon the physical characteristics
of the dust as well as the chemical nature of the
uranium
b.
Uranium miners may also develop silicosis in uncontrolled
mines
(1)
Most of the uranium ores in the Colorado Plateau contain 30% to 70% free silica
Precautions necessary to control hazards
a.
Radioactive and nonracicactive hazards essentially controlled by same methods
(1)
Adequate mechanical ventilation
(2)
Dust control practices
(a) Wet drilling
(3)
(b)
Watering down muck piles during loading
(c)
Wetting down of working places
Delay entry to mine after blasting to allow for decay
of radon and daughter products released in blast
(4)
Personal hygiene
(a)
Frequent baths and clothing changes for underground miners
(bo)
Eating and storing of foods outside of mines
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