We've had some posts going around about dirty jobs in our younger days. When I was a teenager working in an old feed mill in the early 70's the owner was short on bin space for grain. A couple of years he rented a silo for oats. The oats were blown in with a silage blower. Problem with that is there is only one way for the oat dust to get out - down the chute you had to climb through to get inside the silo to remove the oats. I remember that chute always being covered with a thick layer of oat dust. We always tried to make it the last thing we did in the day so we could go home afterward and shower.