(IMAGE) Tohoku University Caption This is a photograph of 60mm diameter PC steel cable for bridge construction and cross sectional structure. Credit Yutaka Oyama Usage Restrictions Credit: Yutaka Oyama License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.