Gold Trommel Wash Plants MSI Mining Equipment Gold . Portable Gold Trommel MSI s T8 The portable gold trommel wash plant the T8 is rated up to 300 tons per hour It is designed specifically for gold recovery operations We rate the T8 at 300 tons per hour or 200 cubic yards Its design allows for portability and fast setup with a 300 horsepower hydraulic drive system More .