機器
automation
belt
blue
civil
construction
convey
conveyor
deliver
delivery
dirt
drop
eingineering
equipment
geology
gold
ground
handle
handler
heavy
industrial
industry
international
large
long
machinery
material
materials
metals
mine
minerals
mobile
move
moving
precious
radial
rock
rocks
sand
ship
shipping
soil
source
stacker
stockpile
stockpiling
telescopic
transport
vehicle
work