The two instructors, Proff. Dr. Ali Hussein Otaiwi and Assist. Prof. Hussein Alaa Jaber from the Department of Materials Engineering at the University of Technology for a letter of acknowledgement and appreciation from the President of the University of Technology, Prof. Dr. Ahmed Mohammed Hassan Al-Ghabban, for his efforts that contributed to the success of the Fifth International Scientific Conference on Environment and Sustainable Development, according to the book No. M.R.J./485 dated 11/22/2121.