機器
big
black
career
coal
dig
digger
dredging
energy
environment
equipment
excavate
excavation
excavator
extraction
geology
grab
ground
heavy
industrial
industry
land
large
load
loading
machinery
mine
mineral
minerals
mining
mover
moving
open
ore
pit
power
produce
production
resourse
super
top
trasport
trasportation
truck
vehicle
view