機器
燃やす
belt
belting
blue
bridge
brown
business
coal
commodity
concrete
construction
conveyor
crushing
dig
dirty
energy
engineering
extraction
factory
falling
geology
global warming
gravel
heavy
industrial
industry
large
long
machinery
manganese
material
metal
mine
natural
ore
outdoor
pollution industry
power
quarry
raw materials
rock
site
stone
technology
texture
transport
transportation
vehicle
work