Capital Cost

Capital cost, commonly abbreviated as CAPEX (Capital Expenditure), refers to the total financial investment required to design, procure, construct, commission, and bring a mining project or expansion to operational readiness, encompassing all one-time, non-recurring expenditures that result in durable, long-lived physical assets. In bauxite, iron ore, gold, and diamond mining, capital cost estimates are foundational to project feasibility assessments, investment decisions, financing arrangements, and shareholder reporting. Capital costs typically include direct costs such as mining equipment (excavators, haul trucks, drill rigs, loaders), process plant construction and equipment (crushers, mills, flotation cells, leach tanks, smelters), civil works (earthworks, roads, buildings, tailings dams), electrical infrastructure (power lines, substations, generators), and instrumentation and control systems. Indirect costs include engineering, procurement, and construction management (EPCM) fees, project management, temporary facilities, construction camps, freight, insurance, and contingency allowances. Owner's costs cover land acquisition, permitting, environmental studies, training, and pre-production expenses. Capital cost estimation is classified by accuracy class: from Class 5 (order of magnitude, ±50%) through to Class 1 (definitive estimate, ±5-10%). Estimates are progressively refined as project studies advance from scoping to prefeasibility to feasibility level. Sustaining capital refers to ongoing capital expenditure required to maintain productive capacity throughout a mine's life, while growth capital funds expansions. Capital cost overruns are a persistent industry challenge, with many major mining projects experiencing cost growth of 20-100% above initial estimates due to scope changes, labor shortages, remote logistics, and commodity price inflation.