Dipper dredgers (a powered bucket mounted ... - IADC Dredging
The dipper dredge is a strong piece of equipment, good for removing hard compact materials such as: clay, hard-packed sand, glacial till, stone; blasted rock and; old structures and obstructions. Limitations. A dipper dredger can cause substantial sediment disturbance and resuspension when dredging fine-grained material.