•
Eduard Franz as
Éleuthère Irénée du Pont •
Marcel Journet as
Col. Louis de Tousard •
Sigrid Gurie as Sophie du Pont •
Grandon Rhodes as
President Thomas Jefferson •
Walter Sande as Tom Cooper •
André Charlot as
Peter Bauduy •
Tom Neal as Alfred V. du Pont •
Stanley Ridges as Gen. Henry du Pont •
Edmon Ryan as Lammot du Pont - the elder •
Pierre Watkin as Col. Henry du Pont •
Lyle Talbot as Eugene du Pont •
David Bruce as A young du Pont •
Nana Bryant as Elizabeth du Pont • John Morgan as Francis C. du Pont •
Peter Ortiz as Charles I. du Pont •
James Millican as Alfred I. du Pont •
Stuart Holmes as Dr. Alexis du Pont •
Stacy Keach Sr. as Pierre S. du Pont •
Douglas Kennedy as Coleman du Pont •
Marshall Reed as Hamilton Barksdale •
Mort Thompson as Francis I. du Pont • Ted Jacques as Amory Askell •
Donald Woods as Irénée du Pont •
Charles Lane as Lammot du Pont •
Whit Bissell as Dr. Wallace Carothers •
Art Baker as Chemical Director • Vincent Pelletier as Narrator ==References==