The Waste Retrieval Module (WRM) consists of two main parts; 1) The Retrieval Module consisting of the argon inerted shielded containment, which houses the Retrieval Machine and the Cropping system 2) The Retrieval Module Maintenance room, which is situated above the Retrieval Module. The WRM retrieval machine incorporates a telescopic boom which extends into the Silo, collects waste in its grab which is raised and returned to the silo threshold, at this stage any retrieved waste protruding from the grab will be trimmed by the cropping system which is located on the west of the module in its containment housing. After cropping, the grab is withdrawn into the WRM, the retrieval machine is turned through 180 degrees and extends to the hoist well allowing the grab/waste to be lowered into the Waste Handling Module. The Maintenance Room houses a hoist unit for recovery and maintenance purposes of Retrieval Module equipment.