Stronghold Companies Services Investment In People About Us Contact The Secret is Our People We are a purpose-built group of specialty companies providing turnkey turnaround and tank services for the refining and petrochemical industries. Learn More The Best People, Superior Equipment, Effective Processes Stronghold provides our partners the safest, most efficient quality solutions in the industry. We achieve this by developing and cross-training highly skilled craftsmen, investing in state-of-the-art equipment, and utilizing effective methods which provide significant cost and productivity synergies. Click below to explore our capabilities.