No other dam is built entirely from concrete and steel ... is under water and cannot be seen at any time. All the gravel, sand and crushed stone used in this vast amount of concrete was excavated ...

The hydropower dam, in quake-prone Tibet, is set to be the world’s biggest. But China has said little about the project, ...

For many communities here, sand dams built on seasonal rivers have grown in popularity. That's true for Kyalika village in Makueni County, where Rhoda Peter and her welfare group have built three ...

The dam was built of wooden pile walls with rock fill ... This work on the dams was done in concert with the clearing of boulders, sand bars and snags along the Allegheny River to improve navigation.

China’s decision to build the world’s largest hydropower dam on a river that flows into India and Bangladesh has sparked concerns in both countries over the project’s potential impact on ...

Li Yang, an executive with the project, said the dam, which was built with an investment of nearly ... said the project is a pioneering concrete-faced sand-gravel dam, serving as a model for ...