I don’t believe Trimix is anywhere near “recreational”
Recreational is clearly defined in all ow classes in the US
There are three types of diving only:
- recreational (including trimix to arbitrary depths)(for recreation)
- professional (for pay)
- unwanted (for survival)
Professional diving includes inspection, underwater construction, military, public safety and sewer diving and possibly some other forms of diving. Some of these are commercial diving, others are governmental diving.
I know. I am challenging the norm