In a message dated 17/02/99 08:14:20 GMT Standard Time, david.watson@ruh-
bath.swest.nhs.uk writes:
<< It seems to me that if one does not know the answer to this potentially
lethal question then this is the wrong forum for "guessing". >>
This seems to me to be the case with all subjects on this board, Lighting,
Carrying Oxygen, ................
Keith
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