There's more to depth of field than shooting wide open for sick bokeh. Depth of field can be shallow or deep, and the deep focus in this shot is what makes it work. Beautiful shot!
It is mostly steam. She's a KRAFT mill... Domtar is up to three turbines now, so their recovery boiler goes through a lot of water. Of course it's not JUST steam in that main stack, but let's pretend it is and carry on with our days. :p
Chills. I just got me some goddamn chills. Thanks for this one.