American Diamond Tool, a privately held enterprise, was established in 2001. The company manufactures downhole tooling and drill bits for the mining, petroleum, and construction industries. ADT is pleased to have an employee pool with hundreds of years of combined experience, and is rapidly becoming a world leader in diamond bit technology. Our ability to supply standard  products, along with an experienced engineering staff able to design specialty products for difficult and non typical drilling, has enabled us to become a leading manufacturer and supplier in the drilling industry.