Abstract: A waste handling container includes a container body with a top and an opening defined therein, the opening having opposite sides; a lid adapted to cover and seal shut the opening; and, a lid control assembly for supporting and guiding the lid and enabling the lid to be moved between a horizontal, closed position covering and sealing the opening and a vertical, open position away from the opening and pivoted to either side of the container body. The lid control assembly includes a pair of guide rails mounted to the container body along opposing sides of the opening, and includes a pair of roller hinge mechanisms mounted to the lid and adapted to correspondingly engage with the guide rails and allow the lid to slide laterally along the top of the container body and to hingedly pivot at either of opposite edges of the container body. The guide rails are mounted to the container body for vertical reciprocation and each includes a pair of suspension units for biasing the guide rails in the up position.

Abstract: A waste material handling container for sludges and the like having a liquid tight seal between a container door and its associated opening. The seal comprises a heavily armored resilient element and a cooperating rigid element arranged to engage the unarmored portion of the resilient sealing element through a gap in its armor. The container includes a system for selectively adjusting pressure on the door to apply a substantially uniformly distributed pressure on the resilient sealing element. The latter is formed of natural rubber having good resistance to a wide range of aggressive chemical wastes.