英文關鍵字
blasting
block
borer
boring
construction
cut
dig
digger
digging
dolly
drill
equipment
excavation
excavator
extraction
factory
geology
granite
heavy
hydraulic
industrial
industry
limestone
machine
machinery
marble
material
mine
miner
mineral
mining
open
operator
pit
power
production
quarry
quarrying
raw
resource
rock
shale
steel
stone
surface
technology
tool
work
worker