https://en.wikipedia.org/wiki/Franck_Report
The Franck Report was signed by James Franck (Chairman), Donald J. Hughes, J. J. Nickson, Eugene Rabinowitch, Glenn T. Seaborg, J. C. Stearns, and Leó Szilárd. By an accident of history, we were among a very few who were aware of a new, world-threatening peril, and we felt obligated to express our views. ...