The Derrick 12' Mini Separation System offers ultra-fine separation in a very small footprint. Coarse mesh scalping is achieved by the lower deck. Screen underflow is then processed through (10) 4" Derrick Desilting Cones. Cone underflow is routed onto the upper fine screening deck with 175 to 250 mesh screens. Cleaned fluid (less than 1/2 of 1% sand) is returned to excavation.