John Wayne died on June 11, 1979, at the UCLA Medical Center, the cause of death was?

Daybonn, yes it was "The Conqueror." Agnes Moorehead also was on this shoot & died of cancer in addition to 70 to 90 other members of the cast & crew.

I believe one or more if John Wayne’s films were filmed on a former nuclear bomb testing site and many of the actors on those films died of cancer.

stu pidasso, read, read and then read some more. And then do a little bit of thinking..

It was widely reported by the anti smoking lobby as Lung Cancer. However I believe he and others, who all died later, visited a site near where the atomic bomb was tested so it makes one wonder exactly what caused it. Smoking or radiation.