COMPARISON OF SURFACE AND UNDERGROUND MINING METHODS IN TERMS OF COST AND SAFETY

Abstract

The mining sector constitutes a vital industry that supplies indispensable raw materials for the realms of construction, manufacturing, and technological advancement. The selection of mining techniques—either surface or underground—significantly influences operational expenditures, productivity levels, safety considerations, and ecological implications. This research articulates a comparative evaluation of surface and underground mining methodologies concerning cost-efficiency and safety performance metrics. A comprehensive literature review encompassing 75 scholarly sources published from 2015 to 2025 was executed, incorporating peer-reviewed journal articles, industry analysis reports, and case studies from diverse geographical regions and resource commodities. The findings reveal that surface mining typically incurs reduced operational costs, ranging from 20% to 50% less than its underground counterpart, and attains enhanced productivity owing to more accessible operations and the capacity for continuous workflow. Nevertheless, surface mining poses risks of environmental degradation, while safety hazards persist due to equipment-related accidents and exposure to airborne particulates and acoustic disturbances. Conversely, underground mining, despite its higher costs and complexities, provides safer occupational environments in particular scenarios, notably for deeper resource deposits, and mitigates adverse surface environmental effects. Compliance with regulatory frameworks and advancements in technology further influence the selection of mining methods and their resultant outcomes. The results underscore that mining enterprises must judiciously weigh geological factors, economic considerations, safety imperatives, and enduring environmental obligations in their method selection processes. The integration of cost-effectiveness with comprehensive safety management is imperative to enhance both operational efficacy and the protection of the workforce