Sturtevant is a leading manufacturer of material processing equipment including its patented Whirlwind® Air Classifier which separates fine and coarse particles with precision and accuracy and has provided the aggregate industry with an alternative to wet washing minus 200 mesh fines from crushed stone for over 100 years. The Mobile Whirlwind® Air Classifier is the first 100% mobile air classifying plant with integral collapsible conveyors, enabling parking to processing in one hour or less at the push of a button.