Complete Capabilities & Solutions: Washing, Classifying & Dewatering
An independent manufacturer for 35 years, GreyStone, Inc., based in Columbus, NE, provides a One Team approach to systems design and manufacturing—with a focus on washing, classifying and dewatering solutions. From individual equipment to complete systems, GreyStone offers site solutions, system and controls engineering, equipment manufacturing, structure fabrication and complete aftermarket support. 

Its sales engineers’ experience in pre-project design services helps aggregate producers create an integrated system layout to maximize plant output. GreyStone’s full line of high-quality sand washing, classifying and dewatering equipment is designed with long-life wear parts and “off-the-shelf” components for local sourcing and quick and easy service, resulting in maximum operation time. Long-standing local dealer relationships add to the company’s full service and support capabilities.

Complete Product Offering
GreyStone offers the most complete, proven product line in the business, including:
   • Portable and semi-portable washing/screening plants
   • Aggre-Spec™ sand classification tanks and systems
   • Single and twin fine material dewatering screws
   • Single and twin coarse material washers
   • Dewatering screens
   • Aggre-Dry® combination dewatering screw and screen
   • Log washers
   • Advanced computer control systems
   • Water clarifiers
   • Rotary and vibrating screens
   • Portable conveyors and radial stackers
   • Blade mills
   • Twin jets
   • Cutter heads
   • Aggregate reclaiming systems