Power station siluetti about 1 year 3 Factory siluetti about 1 year 0 Factory siluetti about 1 year 0 Factory siluetti about 1 year 0 Factory with Smokestacks siluetti about 1 year 0 Factory Truck siluetti about 1 year 0 Factory Smokestack siluetti about 1 year 0 Factory Industry siluetti about 1 year 4 Factory Industry siluetti about 1 year 0 Factory Manufacturing Plant siluetti about 1 year 0 Factory Plant siluetti about 1 year 1 Turning lathe siluetti about 1 year 0 Factory siluetti about 1 year 0 Factory siluetti about 1 year 2 Factory siluetti about 1 year 2 Factory siluetti about 1 year 1 Buildings siluetti about 1 year 0 Factory siluetti about 1 year 0 Factory siluetti about 1 year 1 Factory siluetti about 1 year 0 Factory siluetti about 1 year 0 Factory Smoke siluetti about 1 year 1 Factory siluetti about 1 year 0 Chimney Factory Smoke siluetti about 1 year 1 Factory Pollution siluetti about 1 year 0 Gear siluetti about 1 year 1 Cog siluetti about 1 year 1 Factory plant siluetti almost 4 years 16