Abstract: Apparatus for storing and processing waste materials at hospitals or the like includes a housing having an access opening in a sidewall for receiving wastes and a discharge opening at the base of an end wall. Non-hazardous wastes are stored in a compartment adjacent the discharge opening. A compactor ram is periodically traveled across the compartment and into the discharge opening to transfer wastes to an adjacent receiver of the type that can be transported to a disposal site. Infectious wastes are stored in a separate sealable receptacle from which air is periodically evacuated and replaced with steam to sterilize the contents. Motors then swivel the receptacle away from the housing access passage and tilt the receptacle to dump the sterilized contents into the non-hazardous storage compartment.