Hmmm - like the photo - can't help but think of a throwback to the Monty Python era.
Seriously though, we are accredited to BRC/IOP (berkyop) standard, level A and there is no requirement for our hairnets to be metal detectable at all. We did go over to metal detectable earplugs, but only as a specific requirement of one of our major customers (bless 'em!).
The headgear that wee currently use is the same as the one being sported by yourself, but without the lightning conductor on it. What I am actually trying to find is an alternative to this, as after wearing one for a 12 hour shift, you are left with a lobotoby scar, very sore earlobes (we stipulate that they are worn down over the ears) and, in summer, a very sweaty head.
I did trial some open weave nets, which went down very well. However, they were at least twice as expensive as the current hats, and were frowned upon by our BRC auditor, as she could see hair sticking through them.
I am therefore looking for a compromise, which allows a degree of airflow around the head, but contains any loose hair. Any ideas?
Apparently the jury is still out on how hairy arms have to be before they are netted/covered, and what actually constitutes a beard before a beard snood has to be worn............................. <_<