shift is from isolated functions to feedback loops. In the past, mines digitized fuel, maintenance, or dispatch separately and depended on static reports. Using an operating‑system approach, every truck cycle, refueling event, and maintenance action creates data that feeds directly back into optimization within the same shift. This change moves from reacting the next day to coordinating actions in real time. Figure 1 – Architectural diagram of the platform deployed in the underground mines 2. CONNECTIVITY: TURNING THE UNDERGROUND INTO A NETWORK Underground mines are some of the most difficult environments for wireless signals: rock attenuation, tunnel shape, metal infrastructure, and ongoing development all weaken radio performance. Studies show that standalone Wi‑Fi often struggles with coverage and mobility underground, while traditional leaky‑feeder systems lack the bandwidth needed for high‑density telemetry and video. (Aziz et al., 2020). Successful operations are moving toward hybrid architectures. Private LTE/5G provides wide-area mobility and coverage along ramps and main drifts, with mesh Wi‑Fi or WLAN overlays in high‑throughput zones such as loading bays and workshops. “Connected by design” mines build these networks around operational use cases— tele‑remote loading, autonomous haulage, personnel tracking, ventilation‑on‑demand – rather than just signal‑strength maps, and set uptime and latency goals just as they do for production equipment. A lead–zinc operation in Missouri, U.S., illustrates how retrofitting connectivity and AI on an existing fleet can materially change underground performance without any major capital replacement. The mine is a ramp-access, hard-rock operation with roughly 6 km of primary haulage from the main portal to the active stopes, plus multiple production levels and crosscuts feeding into a central ore pass and truck haulage system. In the baseline state, the site had only a single reliable internet access point near the surface facilities, with radio and paper-based tools used for most underground coordination. This meant that key activities—truck dispatching, maintenance planning, and production reporting—were largely retrospective, with limited ability to adjust on the fly. The primary mobile fleet consisted of approximately 15 production and support assets from a major OEM (including multiple 30–40 t class haul trucks and 10–14 t loaders), supplemented by auxiliary equipment for scaling, bolting, and services. Mine deployed an underground mesh connectivity backbone covering the length of the main haulage to create continuous coverage where previously only isolated hotspots existed. Telemetry hardware was installed to capture key operational data. Within months of
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