They’re not guessing: https://www.laits.utexas.edu/~anorman/long.extra/Projects.F97/DAVID/paper.html#:~:text=Through%20the%20process%20of%20heat,in%20to%20the%

They’re not guessing: https://www.laits.utexas.edu/~anorman/long.extra/Projects.F97/DAVID/paper.html#:~:text=Through%20the%20process%20of%20heat,in%20to%20the%20silicon%20crystal https://www.laits.utexas.edu/~anorman/long.extra/Projects.F9.... https://www.semiconductors.org/wp-content/uploads/2020/10/Overview-Of-The-Semi-Industry-And-Its-Approach-To-Chem-Mgmt-and-EHS.pdf https://www.semiconductors.org/wp-content/uploads/2020/10/Ov...