In 2004, Endurance Engineering and Manufacturing, LLC (EEM) began providing 3D mechanical design and stress analysis consulting services. Shortly after opening, EEM began engineering custom quarry equipment with local stone companies. Out of this relationship grew an awareness of a market need for a new and revolutionary type of industrial tumbler. Today, EEM manufactures the Tumblers, Saws, Conveyors and still provides custom design engineering and manufacturing services.