Miners in the tunnel, engineer with helmet managing machinery, industrial construction site underground.
Palabras clave
miner,
mine,
industry,
coal,
helmet,
mining,
tunnel,
engineer,
dark,
mineral,
safety,
man,
person,
industrial,
construction,
engineering,
job,
work,
resource,
exploration,
hat,
working,
rock,
stone,
hard,
labor,
dirty,
employee,
earth,
machine,
machinery,
power,
uniform,
hard hat,
geology,
charcoal,
dangerous,
inside,
danger,
protective
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