what happened to all the steel beams from the WTC buildings? did anyone do any forensic analysisof any of the steel?
some of the steel was recycled into a warship. I am not sure at what you are trying to get at with the forensic analysis of the steel. There is no conspiracy involving the towers outside of planes crashing into them despite what a lunatic fringe want you to think.
Some of the steel was recycled for sale to other countries where they aren't so picky about reusing building materials. NIST had 200 pieces of the steel for their investigation, which they returned last year. This was covered in the press. The rest of the steel was held at JFK international airport's Hangar 17. Much of it will be placed/has been placed in the new museum beneath the Memorial at the WTC site. Thousands of pieces are being given out for 9/11 memorials all over the world. Just about every day you read in the newspaper about another piece going here or there to this city or that city. Yes, a lot of the steel was tested for a number of chemical compounds. It had to be for safety reasons before storing it and giving it out. Depending upon what countries the recycled beams were sent to and their rules, it was sometimes tested at the ports of entry over there, as well.