There are pictures of this silo property on the internet that pre-date when the current owners purchased the property. These photos give a good idea of what the missile silo for sale looked like before the current owners did clean-up and began renovations and site improvements.
WD-40, beloved by handymen (and women) worldwide, was first invented for the Atlas missile program. It was created to prevent corrosion in the stainless steel “balloon tanks” of the Atlas-series missiles.
You can read more about this interesting link between the invention of WD-40 and the Atlas F missile on this Wikipedia page.