It might be of interest to note that the moon appears to be 30% oxygen by weight. The missing element is hydrogen of which there are traces only.
regarding what RightWhale said at message 56:
http://www.freerepublic.com/focus/f-news/1722173/posts?page=56#56
Hubble Telescope Turns to Moon and Sees Possible Oxygen Source
NY Times | October 20, 2005 | WARREN E. LEARY
Posted on 10/20/2005 12:58:40 AM EDT by neverdem
http://www.freerepublic.com/focus/f-news/1505698/posts
Breathing Moonrocks The Moon has plentiful oxygen for future astronauts
science.nasa.gov | Dave Dooling
Posted on 05/06/2006 5:39:58 PM EDT by Iam1ru1-2
http://www.freerepublic.com/focus/f-news/1627963/posts
One small breath for man (extracting oxygen from the lunar soil)
Daily Mail (UK) | 5/28/2006 | ELANOR MAYNE
Posted on 05/28/2006 4:25:09 PM EDT by Dark Skies
http://www.freerepublic.com/focus/f-news/1639789/posts