explosion
alert
atomic
attention
background
beware
black
black background
caution
chernobyl
danger
dangerous
energy
hazard
hazardous
health
icon
industrial
industry
information
isolated
metal
nuclear
power
prevent
prevention
protect
protection
radiation
radio
radioactive
radioactivity
ray
reactor
risk
safety
security
sign
signal
symbol
symbolic
triangle
ukraine
warn
warning
white
yellow