An engineer in a white helmet examines a piece of rock in an alumina quarry. Ore mining
Schlüsselwörter
engineer,
alumina,
quarry,
examining,
expertise,
foreman,
hard hat,
horizontal,
job,
manager,
occupation,
working,
contractor,
employee,
male,
professional,
discovery,
helmet,
looking,
man,
business,
technology,
white,
machinery,
industrial,
one person,
control,
ore,
bulldozer,
mineral,
piece,
equipment,
rock,
geology,
closeup
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