The exponential expansion of mineral extraction since the nineteenth century has been closely linked with the increasing use of fossil fuels. Coal, petroleum, and natural gas have transformed mining from a labor-intensive activity into a highly mechanized and energy-intensive industry capable of extracting minerals from greater depths, larger areas, and lower-grade ore deposits. In the environmental history of the Indian subcontinent, fossil fuels not only powered industrialization but also reshaped landscapes, labor systems, ecological relationships, and patterns of resource governance. The extraction of minerals and fossil fuels became mutually reinforcing processes, creating a cycle of expanding industrial demand and increasing environmental transformation. Before the widespread use of fossil fuels, mineral extraction in the Indian subcontinent was relatively localized and dependent on human labor, animal power, and renewable energy sources such as wood and charcoal. Ancient and medieval mining activities focused on iron, copper, gold, lead, zinc, and precious stones. Although these activities sometimes caused local environmental degradation, the scale of extraction remained limited by technological constraints and the availability of energy. Mines were generally shallow, transportation was slow, and production was directed toward regional markets. The Industrial Revolution fundamentally altered this pattern. Coal emerged as the principal source of energy for steam engines, railways, foundries, and factories. Fossil fuels provided the enormous quantities of energy necessary to operate pumps, drilling machines, crushers, ventilation systems, and transportation networks. As a result, mines could extend deeper underground, process larger volumes of ore, and sustain continuous production throughout the year. Energy availability became one of the primary determinants of mining expansion. In the Indian subcontinent, coal mining itself became one of the earliest examples of fossil fuel-driven mineral extraction. The discovery and systematic exploitation of coalfields in eastern India, particularly in the Damodar Valley, supplied fuel for railways, industries, and steamships during British colonial rule. Coal mines required extensive infrastructure, including roads, railway lines, bridges, workshops, and settlements, which in turn facilitated access to other mineral-rich regions. Thus, fossil fuel extraction directly enabled the expansion of extraction of iron ore, manganese, mica, limestone, bauxite, and other minerals. Railways represent one of the clearest examples of the relationship between fossil fuels and mining expansion. Steam locomotives powered by coal connected remote mining districts with industrial centers and ports. Previously inaccessible mineral deposits became economically viable because transportation costs declined significantly. Iron ore from central India, coal from Jharkhand and West Bengal, and manganese from Odisha and Madhya Pradesh could now reach factories and export markets efficiently. The railway network therefore acted as an extension of fossil fuel energy into the mineral frontier. Mechanization greatly increased extraction rates. Diesel-powered excavators, drilling rigs, bulldozers, dump trucks, and earth-moving equipment replaced manual labor in many mining operations. Open-cast mining became increasingly feasible because fossil fuel-powered machinery could remove enormous quantities of overburden rapidly. This method significantly increased mineral output while reducing the dependence on skilled manual miners. However, it also caused extensive deforestation, habitat destruction, soil erosion, and landscape alteration. The availability of fossil fuels also enabled the exploitation of lower-grade mineral deposits. Earlier mining focused primarily on high-quality ore because processing low-grade material required excessive labor and energy. Fossil fuel-powered crushing, grinding, smelting, and beneficiation technologies reduced production costs and allowed industries to profit from ores that would previously have been considered uneconomical. Consequently, mineral reserves expanded not because of new discoveries alone but because technological advances made