機器
燃やす
black
carbon
coal
coal dust
commodity
construction
conveyor
conveyor belt
dig
digger
dirty
dust
editorial
emissions
energy
excavator
geology
global warming
gray
grey
heavy
industrial
industrialization
industry
labour
machinery
manganese
material
mine
natural
open pit
ore
pile
pollution
pollution industry
power
processing
raw materials
rock
rough
site
smoke
sorting
stone
texture
transportation
vehicle
work