The latest innovation is a machine that can mechanically sort by length using magnetism. With this technique you can, for example, sort the high-quality steel wires of a shredded car tire by length. After proper sorting, the wires can serve as alternative reinforcement in the concrete.
With a small modification, this system can also be used to magnetically separate bar batteries (such as AA) from metals of different lengths.
INnovation, magnetism and everything that comes with it.