Nope. No mix - deep air.
If you've ever seen the photos from the dives with Mr. Haysbert & that film crew, it is enough to make your blood run cold - no redundancy (they deliberately dove with nothing on the left post), the "safety divers" using singles at 170', no buoyancy control, and more.
We had been planning a trip there, until we heard back from several folks I trust, that the Head Divemaster (Jim Akroyd) had quite the ego and generally made for an
interesting time if you had a technical background.You could expect to have ridicule heaped on you, and be belittled for being a "technical diver". Since they allowed anyone to dive there, and you "aren't skilled enough to understand the complexities of decompression diving here in Bikini" (told to a Tech 2 diver), you would be forced to turn the dive at the mercy of the AOW with the single.
Oddly, his wife was apparently bent regularly. Jim showed up over at TDS with the same rhetoric, and didn't do well. Interestingly, (speaking of TDS) the Bikini website had a long list of Mr. Akroyd's IANTD Technical Instructor ratings, and when Tom Mount publicly pointed out on TDS these were not true, he slammed Tom for "how would he know if they were true"...then pulled the lists off the web site.
These issues kept us from going, and actually given that atmosphere, I'm glad we didn't go. I certainly wouldn't want to be laughed at for (A) wanting to take my deco gas with me, then (B) being told that I was forbidden to take it (use the trapeze you dummy), and then (C) ascend from the dive to discover the boat has broken free from the mooring and it, and your deco gas, is gone.
I have read of many people that have gone there and loved it. In the last couple of years the happy folks all seem to have been regular recreational divers that were taken on "trust me" dives, and only about 1 in 10 technical divers had a good time. I would have gone in a heartbeat when Fabio or Tim ran things. <sigh>
Also, the two Bikinian locals that worked as divemasters were superb by every account.
Perhaps some day it will open up again...
All the best, James