worker in uniform. worker in uniform with pipe. worker with a pipe
Palabras clave
background,
blue,
building,
business,
chemical,
construction,
adviser,
ecology,
electrical,
energy,
engineer,
engineering,
environment,
equipment,
factory,
fuel,
gas,
gasoline,
helmet,
industrial,
industry,
laptop,
maintenance,
manager,
manufacturing,
metal,
oil,
people,
petrochemical,
plan,
plant,
pollution,
power,
production,
project,
refinery,
safety,
site,
sky,
steel,
technical,
technology,
tower,
voltage,
work
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