Green is the colour for O2 in the US.  South Africa use black.  Not sure =
what they use in the UK.  I suspect the SA standards may have originated =
from some UK standard.

Dennis

-----Original Message-----
From:	SMccabe762@ao*.co* [SMTP:SMccabe762@ao*.co*]
Sent:	19 November 1997 18:23
To:	dmooney@cy*.ne*; dennish@wp*.co*.za*
Cc:	gmirvine@sa*.ne*; rose@cs*.sc*.ed*; kevin@nw*.co*; =
cavers@ge*.co*; techdiver@aquanaut.com
Subject:	Re: Helium & O2 grading was Re: Gobber Grade helium

also, every oxygen cylinder i have ever seen is green, even the military =
uses
green. what's up with this black?????
scott


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