Engin BAŞER was born on June 28, 1979 in Istanbul. He graduated from Istanbul Technical University, Department of Mining Engineering in 2003 with a bachelor's degree.
He started his career in July 2005, working at GEO Maden in Çanakkale/Yenice and Ordu/Kabadüz businesses, and worked as Production Engineer and Planning Engineer until the end of 2005. He started working as a Shift Engineer at Koza Gold Enterprises Ovacık Gold Mine in February 2006 and served as Production Chief, Production Chief Engineer and Underground Operations Manager respectively for 15 years. Between January 2021 and July 2025, Gübretaş Maden Yatırımları A.Ş. Engin BAŞER, who works as Söğüt Business Director, has been working at Gübretaş Maden Yatırımları A.Ş. since July 2025. He continues his work as General Manager.

He is married and has two children.

Ahmet KONCA was born on March 15, 1982 in Ankara. He graduated from Erciyes University, Department of Mechanical Engineering in 2004 with a bachelor's degree.
He started his career in February 2005 as a Design and Piping Engineer at Technovision Mühendislik Şirketi and worked between 2005-2008. He served as the Mechanical Department Manager at Promer Müşavirlik Mühendislik Şirketi between 2008-2012 and as the Engineering Manager at Technovision Mühendislik Şirketi between 2012-2013. Afterwards, he served as the Technical Office Chief Engineer at Koza Altın İşletmeleri between 2013-2018 and as the Project Manager between 2018-2021. As of January 2021, Ahmet KONCA continues his work as the Engineering and Investments Director at Gübretaş Maden Yatırımları A.Ş. He has played an active role in many national and international projects throughout his career.
He is married and has two children
 

İhsan DEMİRTAŞOĞLU was born on March 4, 1979 in Ankara. He graduated from Zonguldak Karaelmas University, Department of Mining Engineering, with a bachelor's degree in 2001.

He started his career as a Production and Control Engineer at Bol Coal Enterprises in October 2001, and in 2006 he took on the duties of Rock Mechanics and Fortification Supervisor at Park Elektrik Copper Mine. He started working as a Shift Engineer at Koza Gold Enterprises Ovacık Gold Mine in July 2007, and served as Production Chief and Production Chief Engineer respectively at the same company's Gümüşhane and Çukuralan enterprises for 14 years. March 2021 and 2025
Between July and Gübretaş Maden Yatırımları A.Ş. İhsan DEMİRTAŞOĞLU, who works as Underground Manager, has been working at Gübretaş Maden Yatırımları A.Ş. since July 2025. He continues to work as Business Director.

He is married and has two children.

Gökhan BAL was born on August 2, 1980 in Izmir. He graduated from Dokuz Eylül University, Department of Geological Engineering with a bachelor's degree in 2006. He started his career in June 2007 as an Underground Mining Geologist at Koza Altın İşletmeleri Ovacık Altın Madeni. He served as a Modeling Specialist between 2010-2012, as a Chief Engineer of Meden Geology between 2012-2014, and as a Director of Mining Geology between 2014-2020 at the same company. Gökhan BAL, who served as the Director of Mining Geology at Avesoro Resources between September 2020 and March 2021, has been continuing his work as the Director of Mining and Geology at Gübretaş Maden Yatırımları A.Ş. since March 2021.