Detroit Process Machinery continues to re-stock and re-load for you. The following inventory is now available. Check it out! Ross Double Planetary Mixers 2 gallon, 4 gallon, (2) 40 gallon, JH Day Three Roll Mills with 14″ diameter x 30″ long rolls, Sweco 18″ Screener, (3) Sweco 30″ Screeners, Sweco 40″ Screener. Contact us for details. This is only the beginning!