Danger, open excavation, warning sign
Palabras clave
warning,
signs,
danger,
open,
excavation,
construction,
site,
authorised,
personnel,
work,
dangerous,
area,
zone,
job,
building,
security,
safety,
barrier,
attention,
industrial,
caution,
risk,
forbidden,
fence,
machinery,
advice,
control,
outside
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