Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.

Abstract: A drilling apparatus comprising a base having a top surface and a bottom surface and a first passageway extending from said top surface to said bottom surface, a drill coupled to said base, and a connector coupled to said top surface and defining a second passageway through said connector, said second passageway being in fluid communication with said first passageway, wherein said bottom surface of said base abuts a surface proximate a location to be drilled and surrounding said first passageway so that when a vacuum air stream is drawn through said first passageway into said second passageway, a vacuum connection is defined between said base and said surface, thereby fixedly securing the drill above the location to be drilled.