We have a pellet mill here and puts out steam like that and have wanted to fly through it but didn't know if it would hurt my bird but after seeing
that I think I might . Isn't but a few hundred high have had my eye on that sucker .
Gonna try now though
It is a cool video, but without permission it is also something you are advised not to do. All critical infrastructure is more or less considered NFZ.
From the FAA site -
Do not fly near or over sensitive infrastructure or property such as power stations, water treatment facilities, correctional facilities, heavily traveled roadways, government facilities, etc.
There was a guy on here about a year ago who was in trouble with the law for flying near a power plant in California as I recall.