background
bituminous
black
central heating
coal
coal burning
coal mine
coal mining
coal plant
coal power plant
cube
dark
deposits
ecology
effect
energy
environment
exploitation
extract
extraction
finger
fuel
gas
hand
hand coal
heat
hold
hold coal
industry
lignite
man
manufacturing
metallurgical
mine
miner
mineral
mining
nature
ok
person
pile
plant
power
power plant
power station
resources
stone
thumb
thumb ok
unclean
underground
worker
定額
Hand of the miner shows coal and OK in the mine. Picture can be use to idea about coal mining, energy source or environment protection.の素材 [FY310109390612]
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