The main shredder, the large machine with yellow box, shreds a broad range of IT assets into 4" x 2" pieces. The manual picking station on the walkway is where ferrous metals and plastics are manually sorted. The cylinder is a chain impact separator , which breaks all remaining shredded pieces that pass through the manual picking station into 1" x 1" or smaller pieces.
The box with the blue motor is a ferrous metal separator -- a high-powered rotating magnet removes all ferrous metals from the remaining product stream. Lastly, the stainless steel box is a eddy current separator, which separates non-ferrous metals from the remainder of the product stream.