Worker stands and observes an oil refinery in a protective jacket and helmet
Schlüsselwörter
construction,
men at work,
industry,
engineer,
helmet,
work,
safety,
building,
people,
hard hat,
industrial,
business,
man,
site,
occupation,
job,
contractor,
hat,
builder,
yellow,
protection,
person,
foreman,
hard hat,
plant
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