Using the camera,  Frank and I inspected the broken blades in vacuum duct bending section. We are pretty sure some of  the broken parts are fallen into  bottom of entrance module and vacuum vessel since the broken pars are over on the edge of bending section. The blades rotated at high speed. Basically, They were shoot to the duct opening when they were broken from the pump. Frank and I carefully swiped all broken parts  from the edges  back to center of duct first. Then, We use vacuum cleaner sucked all broken parts out of the entrance module. We can see lots aluminum dust  during the clean up. This kind of aluminum dust also could  fallen down to bottom of module and vessel.  After clean up, We inspected duct with camera. We can see all broken pieces and dust are cleaned out.  The removed broken pieces will be stored with broken pump when the vessel bottom clean up is done.