Description: The article covers the problem of ambiguous forecast of ecological safety of the mine, if it is viewed as a complex system, which it is. A brief overview of the environmental situation in the mining regions of Ukraine. The method of solution of scientific problems in analysis of complex ecological hazards (on the example of mine fires, considered one of the most dangerous accidents that can occur at the mine). On the base of idea of safety of the systems and processes at interpretation of safety as troublefree realization of system-making elements properties in the systems and processes. Generalized the procedure for analyzing risks of environmental health threat.
Keywords: ecological safety, difficult systems, hazardous occurrences ecological risk, mine fires