An x-ray system comprises an x-ray tube, covered by a housing, which emits x-rays therefrom, and a receiver mounted within the x-ray tube housing. The systems and methods overcome the deficiencies of prior art speech query and response systems through the application of a complete speech-based information query, retrieval, presentation and command environment. Processing by the remote user of the identifiable allocated task is in response to a task initiation communication from the central server, which communicates with the remote handheld devices over a communications network. The ALD apparatus includes first and second containment reservoirs in fluid communication with the deposition chamber through the inlets. The fluid content of the solids removed from the tank may be controlled by varying the rotational speed of the conical auger. The mandrel and sleeve have flow passages for communicating the pumpable substance from an external source to discharge through the sleeve and mandrel and into the interior of the well string below the top drive power unit.