Open dumping is a common ultimate disposal strategy for municipal solid waste (MSW) in underdeveloped countries. Due to the leachate discharge from the dumpsite, heavy metals from the deposited solid waste over time damage the groundwater, and these dumpsites of MSW also pollute the air, which contributes to climate change and the release of other harmful gases. Biomining is the practice of removing previously discarded items from a landfill in order to recover metal, plastic, glass, combustibles, soil, and other fine materials. Due to its tremendous environmental and economic potential in material recycling, energy recovery, land reclamation, and pollution avoidance, biomining is an environmentally benign technique that integrates the ideas of material recycling and sustainable waste management. This study used a cost-benefit analysis methodology to determine whether biomining was economically feasible, which is crucial for its promotion.