This study focused on applying the pneumatic conveying design principles that were described primarily in the criteria of Noyes and Pfieffer (1985) to a real-world situation to develop cleaning and conveying systems for an innovative soybean threshing device. 
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This article also presents a methodology for material and equipment selection for development of pneumatically operated machine systems.
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 More information on the principles of dilute-phase conveying can be found elsewhere (Neidigh, 2004)