never heard of this -- http://www.austdac.aust.com/oxygen_candle.htm "The Oxygen Candle was developed by the military to provide oxygen for personnel in submarines." http://www.herbalife-scandinavia.com/sub.htm tiny sub from Croatia with CO2 scrubber and cute bubble hatch- has training William Alford walford@dbtech.net Tout comprendre c'est tout pardonner