Abstract: An apparatus for agitating and removing ash and non-combustible materials from an incinerator. Waste material is thermally decomposed in a primary combustion chamber of the incinerator resulting in the generation of combustible waste gases which are fully combusted in a secondary zone. A hydraulically operated ram is mounted for reciprocating movement in the lower portion of the combustion chamber and a discharge door is located opposite the position of the ram. By partially extending the ram, the ram will enter the combustion chamber and agitate the waste without permitting the entry of air into the chamber. By fully extending the ram and opening the discharge door, the ash and non-combustible materials will be discharged from the combustion chamber for collection.