機器
asphalt
automated
building
cement
conveyor
conveyor line
crusher
crushing
drywall sheet
employee
excavation
excavator
extraction
factory
gypsum
gypsum board
heavy
industrial
industry
loading
machinery
manufacturing
material
metal
mine
mining industry
pebbles
pit
plant
plasterboard plant
plasterboard sheet
process
production
production line
quarry
quarry equipment
quarry machine
quarrying
rock
rocks
sand
site
stone
stone crusher
stones
technology
transport
transportation
workshop
定額
Conveyor belt in a factory of building materials production. Stock footage. Close up of production line with small crushed stones or gravel.の素材 [FY310159765703]
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