An underground mining environment necessitates the implementation of an advanced system that integrates Internet of Things sensors, wireless communication networks, and artificial intelligence to continuously monitor and predict hazardous conditions in real-time. There are four primary communication technologies applicable in underground mining working environments: leaky feeder communication system, Wi-Fi communication system, optical fiber cable (OFC)-based communication system, and digital fusion solution that integrates leaky feeder, Wi-Fi, and OFC systems. The leaky feeder system is known for its reliability and minimal signal loss in underground settings; however, it is limited by its bandwidth capacity. In contrast, the Wi-Fi and OFC systems offer greater bandwidth, facilitating the integration of many sensors, CCTV, and communication devices, but they are susceptible to signal loss and damage to the OFC due to the harsh underground conditions. To mitigate the shortcomings of each technology and harness the benefits of individual technology, the implementation of digital fusion technology is beneficial. The digital fusion technology combines the leaky feeder system with Wi-Fi and OFC system, aiming to create a reliable, fail-safe, high-speed, efficient, and multifunctional communication network that improves communication, monitoring, supervision, safety, and productivity. The paper enumerates digital fusion technology that ensures dependable communication in underground mines.