Did the FBI find any fragments of the pressure cooker from the Boston Bombing?

Yes they were able to identify the make and model.

yes they found several pieces on the grassy knoll
they seemed to be emitting some sort of swamp gas.

Yes. They were slowly picked out of those who went to hospitals.. Have you not seen the news clips on people describing their injuries???

Springs and firecracker shit , then fake a bunch of injuries , you cant find out what happened to these people , not scientifically , these hoaxsters hide behind HIPPA and a complacent communist media ... Think they dont , look at the shit they changed right before Sandy Hoax , they cover themselves for their time in court just in case dont they ?