機器
asphalt
bucket
building
bulldozer
construct
construction
contractor
crawler
dig
digger
earth
earthmover
eathmovingworks
engineering
equipment
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
loader
loading
machinery
mine
mining
mover
power
quarry
road
sand
sandpit
sandquarry
scoop
shovel
site
soil
track
tractor
transport
transportation
truck
unloading
vehicle
work
worker
yellow