American Supply of Gilsonite Gilsonite was first founded as a supply in the United States of America by pioneers of this business in the late 1,800s. Through the years, the knowledge to apply and Gilsonite usage has been developed significantly among the US suppliers,

Gilsonite mineral is exploited in different ways from the nature. In most cases Gilsonite or any other type of natural bitumen, is a SOLID SUBSTANCE, but depending on the area of availability the softening point can change,