Heavy industry worker wearing hard hat and safety uniform. The engineer carries out maintenance operations on the factory machinery.
Palabras clave
men at work,
hard hat,
engineer,
factory,
machinery,
industrial,
manufacturing,
construction,
equipment,
safety-gear,
maintenance,
labor,
hard hat,
uniform,
mill-hand,
production,
heavy equipment,
mechanical,
engineering,
heavy duty,
person
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