機器
activity
area
belt
broken
bulldozer
construction
conveyor
crane
crusher
cut
damage
damaged
deep
degradation
digger
digging
dirt
dirty
dump
earth
empty
end
environment
environmental
equipment
excavating
excavation
exploitation
freight
front
geology
gravel
ground
industry
land
landscape
large
layers
lime
limestone
loader
loading
made
man
metal
mine
mineral
mining
mobile
mover
open
ore
pit
place
pollution
quarry
resource
road
rock
runoff
scenery
stone
surface
transportation
truck
vehicle
way
work