Those are production engineers. Curiously if you dig into the whole Toyota Production System/Kanban/JIT literature you encounter a lot of this, especially the

Those are production engineers. Curiously if you dig into the whole Toyota Production System/Kanban/JIT literature you encounter a lot of this, especially the work of Shigeo Shingo who came up with the mistake proofing/zero defects/single minute exchange of die ideas. Most of the actual tactics in use are shockingly simple, but it is the ability to move the needle to total reliability that makes the difference.