Heap of coal isolated on white. Mineral deposits
Palabras clave
anthracite,
background,
black,
carbon,
charcoal,
coal,
combustible,
dark,
deposit,
ecology,
energy,
environment,
extraction,
fossil,
fuel,
geology,
group,
heap,
heat,
industrial,
industry,
isolated,
many,
material,
mine,
mineral,
mining,
natural,
nature,
nobody,
object,
piece,
piece,
pile,
power,
production,
resource,
resource,
rock,
sedimentary,
simple,
stone,
texture,
white,
work
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