Coal on white background
Palabras clave
coal,
resource,
fuel,
isolated,
unclean,
extraction,
stone,
central heating,
power,
cost,
tiled,
stove,
clean,
black,
dark,
price,
metallurgical,
energy,
type,
lignite,
bituminous,
mineral,
power plant,
manufacturing,
miner,
effect,
exploitation,
company,
industry,
heat,
mine,
extract,
picture,
burning,
material,
hot
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