Abstract: An automatic compactor-crusher for processing spent aerosol spray cans safely depressurizes, evacuates, and crushes cans for subsequent environmentally sound disposal and/or recycling. Fluid residue is safely captured within a reservoir. A vertically upright, supporting frame secured to a floor in the work area supports a telescoping can receiver assembly. The receiver assembly matingly receives cans for processing. A hydraulic crusher assembly located on top of the frame compresses cans against the receiver assembly with an extensible ram. The receiver assembly comprises a tubular sleeve which coaxially receives a displaceable cylinder. A rigid union at the bottom of the sleeve limits travel of the cylinder, and establishes a fluid flow path into a holding tank. A rigid valve guide projecting from the union mounts a fluid control valve for selectively blocking fluid escape from the receiver, and a rigid, canpiercing lance which punctures cans after sufficient ram displacement.