The proposed system consists of the sensor modules that senses all the data around the coal mine environment and logs the data onto the cloud controlled server page using IOT module. The sever page is maintained using the Java Server Page. The logged data is processed into the average values for each entry on an interval basis. These values are automatically processed using a predefined values maintained by the server page. Ehen there is any arbitrary change in the values of the sensed data an alert is send to the IOT MODULE and the concerned authorities. The IOT module detects the alert signal and glows the inbuilt alarm system and alert message to the authorities may take precaution steps. The main advantage of this project is that Iot detects the uncertainty in the environment in beforehand using data analysis reports the situation to the concerned authority and the miners. The system also considers the emergency situations in hand to alert the miners quickly as possible. This project serves the aspect of “Prevention is better than Cure”.