white, yellow hard safety helmet hat for safety project of workman as engineer or worker, on concrete floor on city.
Schlüsselwörter
architect,
architecture,
background,
blue,
building,
business,
colours,
concept,
construction,
contractor,
design,
employment,
energy,
engineer,
engineering,
equipment,
factory,
hard,
hard hat,
hat,
head,
headgear,
health,
healthy,
helmet,
industrial,
industry,
inspection,
interior,
isolated,
job,
maintenance,
plan,
plant,
plastic,
prevention,
protect,
protection,
protective,
safe,
safety,
security,
structure,
tool,
white,
work,
men at work,
working man,
yellow
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