機器
explosion
action
big
blast
blue
burst
cast
clouds
coal
construction
cut
damage
danger
destruction
dig
dragline
dust
dynamite
earth
ecology
energy
environment
equipment
excavate
excavation
extreme
gas
geology
great
heavy
industrial
industry
landscape
limestone
mineral
mining
oil
open
ore
pit
power
quarry
resource
rock
sky
smoke
stone
technology
work