Worker closing pipe valve in production factory or refinery.
Palabras clave
men at work,
heating,
boiler,
industry,
industrial,
valva,
water,
pressure,
factory,
working man,
man,
power plant,
working,
checking,
control,
flow,
plant,
energy,
energetic,
refinery,
gas,
natural,
storage,
transport,
supervisor,
caucasian,
source,
pipe,
pipeline,
production,
maintenance,
inspecting,
employee,
foreman,
hard hat,
glove,
uniform,
earmuffs,
occupation,
job,
male,
expert,
professional
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