Within the scope of Boron Processing and Applications course, we made a trip to ETİ Maden Eskişehir-Kırka facility. After the presentation about ETİ Maden, the mine site, crushing plant and borax pentahydrate production facility were visited and information was given. We would like to thank Mr. Volkan, Mr. Emrullah, Mr. Mehmet and Mr. Abdi, the plant engineers who informed and hosted us during the technical trip to the Kırka plant where borax mineral is processed.