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A wireless sensor network (WSN) can be defined as a network of small embedded devices, called sensors, which communicate wirelessly following an ad hoc configuration. Underground mining operations around the world pose similar risks to worker safety and health. Though different techniques are used to extract base metals, precious metals, nonmetallic minerals, diamonds and coal, the hazards do not differ that much. The deeper the mine, however, the greater the risk. The coal mining industry is one of the most hazardous professions in the world. Workers insome countries lack social protection and safety guarantees, and are often left to fend for themselves in case of an injury. Furthermore, mining has negative societal effects, such as job loss and displacement. Occupational fatalities are highest in the mining industry, with rock falls, fires, explosions, methane poisoning, and electrocution being common causes. The system is designed to monitor underground risks, including temperature, humidity, and gas levels, and alert the ground crew if any dangers are detected.