Home portable screen plant shaker user manual pdf. Scalper 107T Portable Screening Plant Screen Machine . The Scalper 107T Double Deck Screening Plant is a patented, heavyduty, trackmounted screening plant designed to screen rock, soils, sand, gravel, coal, concrete and more. It works best when paired with your 35 yard (–4m) front end loader. A unique wide feed opening over dual .