Fire Detection in Coal Mines Using WSN is an application for monitoring and detection of fire in coal mines using wireless sensor networks. The application uses BDI (Belief, Desire and Intention) based multi agent model and its implementation on sensor networks. The Language which is interpreted by Jason is an extension of AgentSpeak; this is based on the BDI Architecture. The BDI agents are reactive planning systems, systems that are not meant to compute the value of a function and terminate, but rather designed to be permanently running, reacting to some form of event. The distributed model of environment is adopted to overcome the communication overhead, power consumption, network delay and reliability on a centralized base station.