Abstract: An improved container for loading, storing and/or transporting materials, particularly particulate materials which give rise to airborne contaminants when they are handled. The improved container of the present invention includes a container body having an opening on one sidewall thereof, deflection means arranged inside of the container for directing airborne contaminants disposed inside of the container away from the opening and a door member pivotally connected with the container. The door member is pivotal between a generally horizontal open position wherein the door member cooperates with the deflection means to direct airborne contaminants inside of the container away from the opening and to substantially separate the interior of the container from the opening and a closed position wherein the door member substantially closes the opening.