Three piles of dark aggregate material against a blue sky
Schlüsselwörter
aggregate,
material,
pile,
resource,
testing,
resource,
management,
element,
exploration,
economic,
science,
massa,
material,
stock,
quality,
load,
earth,
civil,
layer,
stockpile,
environmental,
supply,
storage,
mineral,
deposit,
bulk,
mound,
large,
formation,
production,
property,
mining,
component,
mineral,
excavation,
industry,
processing,
dirt,
infrastructure,
engineering,
element,
collection,
dump,
type,
bed,
dirtied,
terrain,
industrial,
pile
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