This paper presents a fuzzy multiple attribute decision making as an innovative tool for criteria aggregation in mining decision problems. So far, various types of formulations or solution methods have been proposed with mining systems, but most of them exclusively considered linear functions as objective functions. Real world study is decision making under subjective constraints of different importance, after using uncertain data (linguistic variables), where compromises between competing criteria axe allowed. It seems however that this technique is still very little known in mining. It is one of the aims of this case study to disseminate this technology in many mining fields.