Derrick Corporation is considered the world leader in the design and manufacture of fine screening equipment and screen surface technology used to screen a wide variety of materials in the range of 3/8 inch to 400 mesh (10 mm to 38 microns). Derrick screens are designed to address the specific demands of the mining, aggregate, chemical, plastics, wastewater and forest products industries. Quality, innovation and reliability are our pledge today and for the future.