The concrete mixing plant - part 2

I finished off the mixing plant office with an air conditioner on the roof and some rust streaks on the sides.

 

The whole building will eventually get a coat of dust for final weathering.

The cement storage silo was supposed to stand beside the mixing building (per instructions) but I don't have room for it there and I didn't like it either. So I chopped down the support bracing and added some H column for bases, to mount on the roof of the mixing building. While I was at it I added a safety cage ladder.

I had to start weathering this portion of the roof because the cement silo will sit somewhere up here.

While I was adding rust streaks I put some on the base too, creating the drip lines that would result on the concrete base.
In case you are wondering about what paint I use on these models, I just use the rattle can spray from the hardware store. I chose a medium green Rustolium for the structure but I like using Testors brand light aircraft gray for the concrete base.