As evidenced by the list of our technical papers and articles, T H Hill has contributed more to industry technology development than just DS-1. From our proprietary approaches to fatigue analysis and monitoring to our real-time corrosion evaluation services, we have worked to convert ideas into practical solutions that you can use to avoid failure while drilling. With DS-1 Fourth Edition on the horizon, and our STC-1 (Specialty Tool Certification) standard under development, we will continue to dedicate ourselves to bringing you the best and most innovative standards and failure prevention services in the industry.