Dr. Mohamed K. Khallaf is an Associate Professor at Fayoum University, Faculty of Archaeology, Conservation Department and the head of Center of Research and Conservation of Antiquities (C.R.C.A.) at Faculty of Archaeology, Fayoum University. He obtained PhD. Degree (2004) in Restoration and Conservation of Antiquities from Cairo University, Faculty of Archaeology, Conservation Department. He is teaching many courses in restoration department from (2004) until now. He gave technical and scientific consulting in many restoration projects (2002-2005). He carried out studies and analysis for many archaeological buildings (2000-until now). He carried out the restoration work of some objects in Historic buildings (2003-2010). He participated in many international conferences such as the Sixth International Conference on Science and Technology in Archaeology and Conservation, Rome, Italy, (2008) and The 5th International Symposium of the Hellenic Society for Archaeometry, Athens, Greece, (2008). He published more than 20 papers in the field of restoration and conservation of stones and historical buildings. He evaluated some of restoration projects submitted to Science and Technological Development Fund (STDF) of the Academy of Scientific Research and Technology. He is co–supervisor of many Masters and PhDs researches. He presented many lectures in various scientific organizations.