I just found the following accident report on Weatherjack's site.

Its not glider-related but is close enough to some recent discussions
on the use of oxygen that it makes a really useful read.

http://www.dft.gov.uk/stellent/group...ty_023414.hcsp

--
martin@ : Martin Gregorie
gregorie : Harlow, UK
demon :
co : Zappa fan & glider pilot
uk :