As the major industries, mining has high potential risk of accidents. Historically minerals have supported humane development and civilization but at the same time this industry has been accompanied by accidents, often with disastrous consequences. Number of mine accidents worldwide, as well as in the Stan Terg mine is disturbing, even more disturbing is the fact of the repetition of the causes of mining accidents. This investigation aims to analyze the causes of accidents, tending to provide the accidents prevision through risk assessment. For this purposes various data and documents, related to accidents in the Stan Terg mine have been analyzed, as well as international documents and statistics related on mining safety and accidents. Whereas, the time period of 2007 to 2011 is analyzed as a key study, 245 accidents have been analyzed for this purpose. Accident causes, date and time, accident location, working shift, worker’s age and type of injury have been analyzed for each selected accident. Thus, for this period of time are caused 232 minor injuries, 12 serious injuries and 1 fatality accident, 60 to 70 % of accidents are caused in the production process, 25 to 35 in the maintenance process, whereas about 2 to 5 % during of monitoring or other types of works.