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Fig. 3. Effect of (A) cumulative blending time and (B) repeated sampling from the ditch soil on dust potential. Dust potential was measured as mass of dust collected on a glass fiber filter during 15 s of vacuum collection while blending. The period of rapid dust generation is denoted using filled circles, whereas a lower rate of dust production after 4 min is denoted by open circles. All dust samples were collected consecutively from the same ditch soil sample.
