The problem to solve is the generation of dust grains in Pits Discharge from either Hydraulic dump trucks or Trucks.The solution is the placement of mini bins below the grille with Pneumatic Actuator, which remain closed in the first Moments of the discharge until the cereal has formed a Montana enough covering some of the mini - Hoppers. After a Predetermined time is one or more of the mini bins containing cereal.And closed the other mini hoppers, Making the Powder generated in the Pit confined inside and out the Air Displaced by the mini Open Hopper Filter worked as the same cereal.
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