Sonar Drilling and Geological Research Center was established in 1977 by Geological Engineer Mr. Muzaffer CEVIK, in order to work on 'Engineering Geology' and 'Drilling' fields. In the 30 years of working period, many geotechnical investigations of buildings, tunnels, bridges, highway and railway lines, power plants and water structures have been done. (Continued)

SONAR thinks that the success and the reliability in the construction industry can be achieved by producing the most economical, healthy, practical and long time valid solutions to the engineering problems in the feasible shortest time. SONAR thinks that criterion for success is that planned construction works are to be completed on intended time and with the pre-defined prices and also the work concept of the firm, the knowledge based experience, human power and machine park are all affecting the success in this field.

SONAR established its Quality Management Department in 2008, and achieved ISO 9001:2000 and ISO 14001:2004 quality certificates accredited by TQCSI International PTY Ltd.