• Judy Garland (Dorothy Gale): Died on June 22, 1969, from an accidental barbiturate overdose at age 47. https://www.biography.com/actor/judy-garland
• Frank Morgan (The Wizard): Died on September 18, 1949, from a heart attack at age 59. https://www.imdb.com/name/nm0601268/bio
• Ray Bolger (The Scarecrow): Died on January 15, 1987, from bladder cancer at age 83. https://www.biography.com/actor/ray-bolger
• Bert Lahr (The Cowardly Lion): Died on December 4, 1967, from pneumonia at age 72. https://www.imdb.com/name/nm0487985/bio
• Jack Haley (The Tin Man): Died on June 6, 1979, from a heart attack at age 81. https://www.biography.com/actor/jack-haley
• Billie Burke (Glinda): Died on May 14, 1970, from natural causes at age 85. https://www.imdb.com/name/nm0000011/bio
• Margaret Hamilton (The Wicked Witch): Died on May 16, 1985, from a heart attack at age 82. https://www.biography.com/actor/margaret-hamilton
• Charley Grapewin (Uncle Henry): Died on February 2, 1956, of natural causes at age 86. https://www.imdb.com/name/nm0332128/bio
• Victor Fleming (Director): Died on January 6, 1949, from a heart attack at age 59. https://www.biography.com/filmmaker/victor-fleming

Looks like only the scarecrow died from it (and his cancer may not have even been caused by the asbestos)

Tinman almost died on set due to the unsafe body paint, too iirc

The whole production was a giant trainwreck. The asbestos is only a small part of it

I have heard lf the asbestos use, but did they actually die from it?