Oil field oil workers at work
Palabras clave
oil,
china,
men at work,
natural gas,
derrick,
power,
business,
pipeline,
engineering,
drilling,
people,
technology,
equipment,
energy,
manufacturing,
sunset,
outline,
work,
metal,
fuel,
pump,
field,
helmet,
profession,
crude oil,
gasoline,
industry,
person,
machine,
control,
exploration,
live
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