could someone show a list of those 91 dead?

I agree with you. All the major players who died were both heavy smokers AND heavy drinkers. That is a deadly combination with lung cancer. However, part of the circumstantial evidence includes the high incidence of cancer deaths among Mormons along the fallout route from the bomb that had been tested just prior to the filming of "The Conqueror". Of course, Patrick Wayne was close by during the filming, and he is still around; so, who knows?

They never said that one factor caused it. Just that 91 out of 220 contracted cancer (not necessarily died) from such a diverse group (actors/director/set builders/makeup/landscapers etc.) is too high. One of the reasons you can't get a consolidated list is that some of those people were behind the scenes and therefore they never made the headlines. My guess is some cancer study probably published the number.

You have to be careful with the numbers here. Remember that 1/3 of the people 33.3%, die from cancer normally, so the 45% number does not really constitute that much of an outlier.
There are many other variables to look at before claiming a cancer cluster, even though on the surface it seems a lot but we still have to remember the 33% figure and I am unaware at this time what the standard deviation is that goes along with that value and lacking that I cannot assign any confidence interval or corellation coefficient so, for me, I would need to look at it a bit more.
I will try as it is interesting being as it involves the rich and famous. I would like to look at the rates for the locals and compare those as well. Sounds like a fun epidemiology problem. As a retired researcher from The Los Alamos National Laboratory specializing in high energy neutron measurements and dosimetry I'll give it a look and if I find anything interesting I'll write it up if you all are interested.
Have a Happy New Year!
Rich in New Mexico.

here is an interesting article about their children dealing with this

http://www.people.com/people/article/0,,20077825,00.html

they filmed in this canyon were all the dust collected, they would have dust storms, it was so bad the director would have to wear a mask to keep from breathin it in.

also they hauled a 60 tons of radio active dirt/dust back to the studio for retakes, so exposed in an enclosed space.