aid
alert
attention
badge
beware
care
careful
caution
concept
construction
dangerous
emergency
equipment
factory
fire alarm
fire extinguisher
first
firstaidkit
glove
hard hat
health
helmet
help
kit
maintenance
medical
medicine
preventative
prevention
protect
protection
protective
regulation
rescue
rules
safe
safeguard
safety
safety first
secure
security
shield
stamp
urgency
warn
warning
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