英文關鍵字
big
block
borer
bulldozer
cut
diamond
dig
digging
drill
driller
earth
equipment
excavation
excavator
extraction
factory
geology
granite
gravel
industrial
industry
limestone
loader
machine
machinery
man
marble
material
mine
miner
mineral
mining
mountain
operator
pit
quarry
quarrying
resource
rock
shovel
site
stone
technology
tool
transport
vehicle
work
worker