機器
big
black
carbon
coal
construction
dig
dirt
dirty
dump
dust
earth
energy
engineering
environment
equipment
excavation
excavator
fuel
geology
gold
heavy
industrial
industry
iron
large
machinery
metal
mine
mineral
mining
open
opencast
ore
pit
power
production
quarry
rock
soil
stone
surface
technology
transport
transportation
truck
work
yellow
定額
Coal Mining industry used the mining machinery equipment extracting coal ores from the ground. Open-pit mine or surface mining extract coal to used for heavy industrial in Thermal Power Plant.の素材 [FY31095653696]
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