機器
abandoned
architecture
black
blue
building
business
carriage
coal
company
construction
contura
elevator
factory
global warming
green
industrial
industry
iron
landscape
lift
machinery
metal
mine
miner
mineral
nobody
obsolete
old
ore
outdoor
pollution
power
preparation
processing
production
shaft
station
steel
stone
structure
technology
tower
tracks
traditional
transportation
travel
way
wheel
workings