機器
big
bucket
build
charcoal
coal
coal mining
construction
dig
dump
dump truck
earth
ecology
energy
environment
equipment
excavation
excavator
extraction industry
facilities
geology
gold
ground
heavy
hole
industrial
industry
landscape
large
machinery
mine
mineral
minerals
mining industry
mud
open
opencast
ore
pit
power
production
quarry
road
rock
sand
surface
transportation
truck
vehicle
work