So I went out for a rural county road ride this afternoon and passed by at least a hundred different silos of varying construction over the 33 mile ride. I could have taken tons of photos of the different styles and varying degrees of disrepair, but my ride would have taken forever and I wanted to get in before dark. Sooo....... I snapped a couple photos of the silos that i believe best represented the type that you were looking for. Enjoy!
Next mission: Solar farm