機器
backhoe
build
bulldozer
concrete
construction
construction site
contractor
demolition
development
dig
digger
dirt
drainage
earth
environmental
equipment
excavating
excavation
excavator
field
foundation
gravel
ground
heavy
hydraulic
industrial
industry
job
loader
machinery
mine
mining industry
mover
open pit
open pit mining
pit
quarry
scoop
sewage
sewer pipes
sewerage
shovel
site
sky
soil
trench
vehicle
water
work