The Bruno Creek Tailings Impoundment is a tailings dam on Bruno Creek 19 mi (31 km) southwest of Challis in Custer County Idaho. It serves to store tailings for the nearby Thompson Creek Mine. At 550 ft (168 m) tall it is the second tallest center-line tailings dam in the world. In 2008 Phase 8 of the mine was approved which includes a raising of the dam to 750 ft (229 m). The dam is mainly composed of cycloned sand.