機器
activity
big
building
coal
construction
diesel
drive
dump
dumper
earth
environment
equipment
excavation
excavator
geology
giant
heavy
huge
industrial
industry
landscape
large
loader
machinery
metal
mine
minerals
mover
open
opencast
ore
pit
power
production
quarry
rock
shovel
site
stone
transport
transportation
truck
vehicle
work
yellow