[TheThirdRuffian]

It’s a segment of the vertical portion of a windmill (the electric generating kind).

[2CAVTrooper]

"It’s a segment of the vertical portion of a windmill (the electric generating kind)."

Too big.

With exception to the flanges on the sides, I'd say it looks more like a stage off of a booster vehicle.

Notice the corregated surface (which would be unusual for a bulk silo)

Here are a few pics I found on the net:

Saturn V booster:

Titan II (Note man standing in second pic):