機器
black
bohemia
brown
coal
czech republic
digger
dirt
earth
ecology
energy
environment
equipment
excavator
exploitation
extraction
factory
geology
hard
heavy
industrial
industry
land
landscape
large
lignite
lookout
machinery
mine
miner
mineral
nature
open
ore
point
power
production
quarry
rock
soil
sokolov
technology
tower
transportation
underground
vehicle
view
west
work