Abstract: A fluid transmission conduit welding habitat is provided, having an outer air supportable arcuate dome which is mounted over a point to entrap welding slag, sparks, and the like. A fire-resistant shield is disposed around the interior of the dome. Air supplied to the dome for selectively suspending the habitat. A conduit, filter, or the like is provided through the top of the dome to permit discharge of smoke including particulate matter resulting from the welding procedure. The air supply may be in alignment with the smoke discharge whereby the supply of air forms a carrier fluid for transmitting the smoke and particulate matter out of the dome.

Abstract: A subterranean well fluid transmission welding habitat is provided, having an outer air supportable arcuate dome which is mounted over the well entry point to entrap welding slag, sparks, and the like. A fire-resistant shield is disposed around the interior of the dome. Air supplied to the dome for selectively suspending the habitat. A conduit, filter, or the like is provided through the top of the dome to permit discharge of smoke including particulate matter resulting from the welding procedure. The air supply may be in alignment with the smoke discharge whereby the supply of air forms a carrier fluid for transmitting the smoke and particulate matter out of the dome.

Abstract: There is provided an improved apparatus and method for relatively low volume batch treatment and disposition of sewage or toilet wastes especially from passenger vehicles such as railway cabooses, motor houses, or other passenger-carrying vehicles. The apparatus is characterized by the ability to operate without moving parts for sterilizing, disintegrating, and discharging an aqueous sewage composition including human feces and includes an enclosed chamber having an inlet for the sewage composition at the top of the chamber, separate electrodes in the lower portion of the chamber, a standpipe having an inlet from the chamber and communicating with the upper portion of the chamber and discharging exteriorly of the chamber, and means for impressing a potential difference across the electrodes.