Male walking the up stairway inspection visual tank.
Palabras clave
adult,
check,
chemical,
confined,
construction,
draft,
drawing,
engineer,
engineering,
equipment,
factory,
gas,
glove,
helmet,
industrial,
industry,
inspection,
iron,
job,
labor,
machine,
maintenance,
male,
man,
manufacturing,
metal,
occupation,
oil,
people,
person,
pipe,
pipeline,
plant,
production,
protection,
protective,
refinery,
repair,
safety,
site,
sky,
staircase,
steel,
technology,
tool,
welder,
welding,
work,
men at work
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