These are my personal notes to help me out next year. While I hope 
they help you out, if your film is bad because of my advice, it's 
not my fault. It works for me. <grin>

The burn was photographed with a T-90 and a 24mm F2.8 on 
Ektachrome 100. 

Next year, two cameras. One with a 24, the other with a 50-85mm 
would be good.  The longer lens can spot the Man, but needs to 
allow enough dead space to be able to catch the fall, and the 
flames above. I'd suggest a loose crop when setting up.

1/20 @ F4.0 seemed to be about 1 stop under. Opening up one stop 
would save flash unit also. Suggested:  1/20@F2.8 or even 
1/60@F2.0 or 1.8. The flames might be better defined at a higher 
shutter speed, although the foreground will be in poorer focus. 
When the Man really went off, I bracketed all the way up to 
1/250@f4.0. Seemed to work well. All the film was usable.

A spare Quantum pack for the flash would be good.

Also: 
It's night. You can't see how much dust is floating around on the 
playa. I'd suggest keeping your lens changes down to a minimum. 
It's a pain to get that stuff off the mirror and inside of the 
body. I had to tear down and clean *everything* when I got back. 
All the bags needed washing too. I can't stress enough how badly 
that dust gets into everything.