Abstarct: Underground mining of coal is a dangerous industrial activity because it’s events and accidents prompt to miners death and disability in each country. This events can cause financial problems and vital damages to miners and contractors. So detection, consideration and management of events can play an important role in mines safety. In this scope, many scientific investigations have done inside countries like china, turkey, Canada and other countries. Prior methods about job events risk in coal mines are often on numerical techniques as FMEA or qualitative manners as risk matrix. In other hands, event’s variables often consist not pragmatism so it’s better to use methods that are upon not pragmatism. the aim of this research is study of East Alborz mines risk. Though. First, the total work events in East Alborz mines is detected, then impressive factors are determined by statistical analysis. Work events risk modeled by Mont-Carlo simulation method and qualitative risk matrix.