In spite of the evolution of Moroccan mining industry, underground mines still witness hazardous incidents happening to workers, aggravated by the non-availability of adequate health monitoring systems. This triggers the necessity of developing a solution ensuring workers’ safety and allowing prompt intervention in cases of emergency. This paper presents a health monitoring system for underground miners in Morocco. The system provides continuous measurements of vital body signs, namely temperature and heartbeat rate, as well as gas concentration in the mine environment; it then communicates data wirelessly to be displayed on a command station. Particle Photon is used as the processing unit to allow suitable implementation of the system’s logic. Pipedream (a platform enabling processing and piping data between apps using manual code development) and Node-RED (an integration for developing simple graphical user interfaces and wiring together hardware devices, online services, and application programming interfaces) are used to trigger events and generate dashboards to monitor miners’ health as well as warn the user in case of dangers. The system exhibits instantaneous responses to changes in the measured parameters, proving the functionality of our novel health monitoring system design.