3d
alert
atomic
attention
beware
biohazard
black
blaze
caution
chemical
chemistry
circle
contamination
danger
disaster
ecology
energy
environment
environmental pollution
fiery
fiery tail
fire
flame
hazard
hazard symbol
hazardous
icon
illustration
industry
isolated
isometric
nuclear
object
plutonium
poison
pollution
radiation
radioactive
radioactivity
radiologic contamination
risk
sign
symbol
toxic
uranium
warning
waste
yellow
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