Are there some at the bone yard in Arizona?
Actually the 355th FW at Davis Monthan is the largest contingent of active A-10's. So at least the airplanes are in the right climate to last a long time...
It takes an enormous amount of time to put together an operating, efficient factory. Even more if you are talking about a military airplane that has to conform to Federal Acquisition Rules and a mountain of other regulations.
Then you have to staff it with people who know the design intimately, or else the build will be one long cascade of errors.
Even if the drawings and scanned CAD models of the equipment exists, that's just square one. Then you have to implement and execute. It would be a long time to bring the Warthog back on line.
It could be done. But not easily. That's what's criminal about the loss of manufacturing capability in the U.S.
I stood outside the crumbling brick archways at Republic Field in Farmingdale in 1992 and I felt like Heston looking at the Statue of Liberty on the beach. It nauseated me. Still does.
What was built by Americans is being torn down by the hate filled anti-Americans. It goes on as long as we let it.