This Frugal Rehabilitation Methodology (FRM) is the product of action research-based approaches in rehabilitation demonstration, stakeholder consultation and over two years of effort in training and capacity-building. It provides practical guidance which has been demonstrated to be successful across seventeen frugal rehabilitation demonstration projects across the country. It is now available for widespread use both for ensuring that the formalized ASM sector can operate to a high standard of environmental responsibility, and to address the rehabilitation of ASM degraded lands in Mongolia.