From the Canadian Shield to the Andes: Solid-State Battery LHD Loaders as a Lever for Deep-Mine Ventilation Decarbonization and Their Extension to Peruvian Public Mobility

<title>Abstract</title> <p> <bold>Background.</bold> Auxiliary ventilation in deep underground mines consumes between 25% and 50% of a mining operation’s total energy budget, a load that exists almost exclusively to dilute diesel exhaust gases, engine heat rejection, and diesel particulate matter (DPM) [1]. The hard-rock mines of the Canadian Shield (Sudbury, Kirkland Lake, and the Nordic operations built on the same technological lineage, among others) constitute the most thoroughly documented worldwide testbed for battery-electric load-haul-dump loaders (BE-LHDs), and the solid-state battery (SSB) is the next disruptive step in that trajectory. <bold>Objective.</bold> To quantify, through a DOI-verified documentary synthesis, the ventilation performance of Canadian BE-LHD deployments; to build an 18-dimension engineering-transferability matrix between the Canadian Shield and seven Peruvian underground mines; and to define a four-phase implementation protocol — specifying procedures, tools, materials, machinery, and personnel profiles — for introducing SSB-LHDs in Peru and extending that shared technology core to public-space fleets. <bold>Methods.</bold> A structured narrative review (SANRA criteria, flow adapted from PRISMA 2020) of literature indexed in ScienceDirect, SpringerLink, and DOAJ (October 2025–June 2026), with individual DOI-resolution verification; of 112 records identified, 31 were assessed in full text, and 10 DOI-verified references were retained in the formal bibliography, complemented by manufacturer technical specifications (Sandvik, Epiroc, QuantumScape) used only as non-citable background context because they lack a resolvable DOI.An ordinal matrix (0–3) of 18 engineering, regulatory, and socio-technical dimensions was scored for the Canadian case, the Peruvian Andean aggregate, and six individual Peruvian mines. <bold>Results.</bold> Canadian and Nordic trials using Canadian-lineage technology document ventilation energy reductions of 30–44% and airflow reductions of 50–77% following the substitution of diesel LHDs with BE-LHDs [2–4]. The Canadian Shield scores 47/54 points (87%) on the transferability matrix; the Peruvian aggregate scores 31/54 (57%), with Cerro Lindo (Nexa Resources) as the most prepared site (33/54). Extrapolating the Canadian evidence to Cerro Lindo’s operating geometry, a modeled ventilation-energy reduction of 34–41% is projected under a Phase-3 SSB-LHD deployment. The four-phase, 36-month protocol details the software, instrumentation, cell materials, machinery, and six personnel-competency families required, and is benchmarked against Peru’s six leading narrow-vein underground mining operations and against the country’s five open-pit megaprojects, for which the electrification pathway is different (trolley-assist and hydrogen haul trucks, not LHDs). The public-space extension is anchored in the already-operating precedent of Minera Poderosa’s Modasa–CATL electric bus and in the Nordic experience of urban bus-fleet electrification [10]. <bold>Conclusions.</bold> The proposed framework is original in explicitly coupling the transition to a solid electrolyte with high-altitude Andean operating constraints, and in extending the mine-electrification paradigm toward Peruvian public transport; statistical-generalization limitations inherent to a documentary-synthesis design are acknowledged, and a primary-research agenda (an instrumented pilot trial) is defined to close them. </p>