機器
abundance
aggregate
ballast
basin
belt
belts
bundle
cement
concrete
construction
conveyor
conveyors
countries
desalination
dig
digging
dirt
dredger
drying
dust
earth
environment
equipment
extraction
extreme
factory
ferro
fuel
geology
granite
gravel
gray
grunge
hard
heap
heavy
huge
industrial
industry
limestone
loader
manufacturing
material
materials
mediterranean
mine
mineral
mining
mountain
objects
ore
part
pebble
pile
piles
pit
plant
quarry
quarrying
refinery
road
rock
rough
rubber
rusty
salt
sand
sandy
silo
sorting
stack
stock
stone
storage
surface
texture
transport
transportation
white
work