John D. Ryan (industrialist), Date of Birth, Place of Birth, Date of Death
TweetJohn D. Ryan (industrialist)
American businessman
Date of Birth: 10-Oct-1864
Place of Birth: Michigan, United States
Date of Death: 11-Feb-1933
Profession: businessperson
Nationality: United States
Zodiac Sign: Libra 
About John D. Ryan (industrialist)
- John Dennis Ryan (October 10, 1864 – February 11, 1933) was an American industrialist and copper mining magnate.
- President of Anaconda Copper Mining Company and creator of Montana Power Company.
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