Pile of rough black coal chunks isolated on white background resource
Schlüsselwörter
coal,
chunk,
black,
rough,
texture,
isolated,
white,
background,
pile,
resource,
energy,
fuel,
power,
industry,
mining,
natural,
material,
element,
dark,
stone,
rock,
carbon,
environment,
fossil fuel,
macro,
closeup,
aggregate,
deposit,
mineral,
geology,
economy,
production,
supply,
demand,
combustion,
heat
Deutsch
