Jack J. Grynberg (born 1932) is a Polish-born American businessman and philanthropist. He is a Denver-based oil and gas developer who has amassed a multimillion dollar fortune in the oil and natural gas sector.
In addition to speaking six languages, he has a Masters in Petroleum Engineering and Refining from the Colorado School of Mines and is an active philanthropist.
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“The history of medicine is the history of the unusual.”
—Robert M. Fresco, and Jack Arnold. Prof. Gerald Deemer (Leo G. Carroll)