East Moline, IL
The John Deere Harvester Works in East Moline, Illinois, occupies about 90 acres of covered space and has been producing combine harvesters since 1913. Production begins with large rolls of steel that are cut, flattened, and formed into parts using CNC machines, laser cutters, and high‑pressure presses before being assembled on a 14‑mile automated track system. The finished components undergo a multi‑stage paint process that includes repeated immersion, electrocoating, and robotic top‑coating, taking roughly five hours from start to finish.
http://www.deere.com/en_US/ag/servicesupport/jdharvestlink/factoryfacts.html