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This is to certify that your paper entitled «A Practical Investigation of Production Performance at the Gohar Zamin Iron Ore Complex (Sirjan, Iran) Using Mean- and Target-oriented Monitoring» was indexed with 11 pages, in the CIVILICA citation database, code COI:ICIRES03_017, after evaluation and approval of the referees of the "International Conference on Innovation and Research in Engineering Sciences 2019.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.