1. Introduction 2. Evolution of biomining technology 3. Techniques involved in biomining 4. Manganese and its application 5. Manganese bioleaching 6. Microorganisms in manganese biomining processes 7. Metagenomic insights into uncultured microbial diversity 8. Factors affecting manganese bioleaching 9. Mechanism of manganese bioleaching 10. Comparative investigation of fungal and bacterial manganese biomining mechanisms 11. Role of Metabolites and Metabolomics for Understanding of Manganese Bioleaching 12. Mixed Culture Bioleaching: An Insight into Manganese Biomining Process and Efficacy 13. Cost effectiveness of the booming process 14. Case studies 15. Future trends