anthracite
background
black
briquet
burning
carbon
charcoal
close
coal
combusted
combustible
commodities
cutout
dark
dirty
dust
earth
energy
environment
exploitation
extraction
fossil
fuel
global
goods
heat
industry
isolated
lump
material
mine
mineral
nobody
object
ore
piece
power
production
raw
resource
rock
stock
stone
structure
technology
warm