It’s not even 29 picograms. It’s zero: > Gold nuclei emerge from the collision with very high energy and hit the LHC beam pipe or collimators at various points

It’s not even 29 picograms. It’s zero: > Gold nuclei emerge from the collision with very high energy and hit the LHC beam pipe or collimators at various points downstream, where they immediately fragment into single protons, neutrons and other particles. The gold exists for just a tiny fraction of a second.