List, What credentials do I need to be able (and be legally safe) to dive with Heliox mixtures? Does IANTD (I checked their standards on their website but found no mention of it) or any other training agency with affiliation in Europe teach the use of Heliox or do they just make it part of the Trimix course? Thanks for any input you care to share. Regards Adri Haine,Belgium,Europe -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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