Figure 1: The Mississippi River drainage basin and the lower Mississippi River. Figure 2: Sediment transport data from Thebes, Illinois, and Tarbert Landing, Mississippi. Figure 3: Model results for ...

For centuries, the sandbars in the Cedar River drifted and flowed with the river current. Then, in the late 1800s, William King thought about how useful that sand would be in making plaster and cement ...

In Simaogang, a small fleet of sand dredgers work from sunrise to sunset, shipping river sand to construction sites around Yunnan. Sand is about as unglamorous a resource possible. But without sand, ...