INTRODUCTION OF GILSONITE (NATURAL BITUMEN) Gilsonite History Gilsonite was found in America prior to Samuel H. Gilson’s 1860 discovery. Gilson was not one of the primary discoverers of Gilsonite, but owing to his marketing efforts, the locals referred to this mineral by its common name, Gilsonite, rather than its scientific designation, uintaite. In 1888, he … Continue reading GILSONITE (NATURAL BITUMEN)