A process for liquefying natural gas in conjunction with producing a liquid stream containing predominantly hydrocarbons heavier than methane is disclosed. The system and method include introducing a plurality of live objects to a singulator. The connecting portion is adapted to partially receive the annular lip of the handle of the screwdriver. The inflatable patient positioning unit includes a plurality of positioner bladders shaped so that when inflated a distal end of each positioner bladder is taller than a proximal end of the positioner bladder. In response to detecting the presence of the user, the fuel dispenser control electronics activates the display so that instructions are presented to the user in a first orientation or a second orientation depending on whether the user’s height exceeds the threshold.