燃やす
anthracite
background
black
block
briquette
burning
carbon
charcoal
closeup
coal
combustible
combustion
cut
dark
dirty
energy
environment
extraction
fire
fossil
fuel
heat
industry
isolated
lump
macro
material
mine
miner
mineral
natural
nugget
object
piece
pile
power
production
raw
resource
rock
shiny
small
space
stone
studio
texture
wealth
white
wood