Image #DCK-1: Washing root samples at the Dickinson grassland site, North Dakota, USA. Water from the larger buckets is being poured through #32 sieves, where the roots are being collected. The samples are then returned to the paper bags clipped above the table for drying and preservation. Left - Tim Vranna, high school student from Dickinson; right - John Cook, graduate, North Dakota State University (Photograph taken August 1970).