abstract
aerial
ashes
belchatw
blue
coal
coal mine
colors
danger
drone
ecology
energy
environment
environmental pollution
factory
industrial
industry
iron
janine
lagoon
lake
landscape
lesser poland
libiaz
mine
mine effluents
pit
poland
pollution
power
power plant
production
reflection
river delta
sedimentation tank
sedimentation tanks
settler
settling tank
sky
supply
tank
ticks
tower
turquoise
waste management
water
定額
Industrial coal mine, abstract sendimentation tank of mine in Poland. Industrial lake Aerial drone photo view. Settling tanks and clarifiers are on wastewater treatment plant.の素材 [FY310229203635]
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