An apparatus and method provides a way of collecting, treating, processing and recycling a variety of hazardous waste material and transforming such materials into a stable, granular nonhazardous substance suitable for safe disposal. The apparatus disclosed combines a variety of separate mechanisms and devices such as vibrating screens, motorized crushers, conveyor systems, and electric or fuel powered motors into a single integrated machine. Chemical additives can be used to treat the waste and bond to any heavy, leachable materials such as lead, copper, cadmium, zinc and other metals and thus lower their leaching characteristics to acceptable nonhazardous levels in compliance with Environmental Protection Agency standards. A concrete additive is added to the waste and the mixture is ground into a manageable substance of uniform texture and consistency.