The pipe.
Schlüsselwörter
technical,
technique,
diesel,
gasoline,
kerosene,
mineral,
mining,
natural,
nature,
platform,
power,
pump,
resource,
building,
business,
chemical,
concrete,
construction,
energy,
engineering,
factory,
fuel,
gas,
group,
helmet,
industry,
job,
man,
manufacturing,
oil,
people,
pipe,
plant,
production,
profession,
silhouette,
tool,
warming,
men at work,
working,
workplace
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