Video provided by the U.S. Coast Guard shows Bristol Bay breaking ice near Manitoulin, a freighter stuck in Lake Erie off the Buffalo shoreline. Parents who make this simple mistake raise ...

During excavation, the monitoring curves vibrate suddenly if the cutter-head becomes stuck or if rocks begin to fracture ... The disc cutter consists of a cutter shaft, cutter body, and cutter ring.

Rotating blade shaft; 5. Spring Z,; 6. Spring X,; 7. Spring Y,; 8 ... Due to the uneven soil structure, the blade can adaptively adjust the relative angle and orientation with the cutter head within a ...