band
belt
black
bulk
carbon
cargo
charcoal
close
coal
coalmine
conveyor
crane
dark
dirty
dust
earth
energy
exploitation
extraction
fossil
fuel
global
horizontal
industrial
industry
landscape
material
materials
metal
mine
miner
mineral
ore
piece
pile
power
production
raw
resource
rock
stock
stone
storage
structure
technology
texture
transportation
warm
wealth
work