Numerical Study on an Applicable Underground Mining Method ...
The EGAT Mae Moh Mine is the largest open pit lignite mine in Thailand and it produces lignite about 16 million tons annually. In the near future, the pit limit of the mine will be reached and underground mine will then be developed through the open pit in the depth of 400 600 m from the surface. However, due to the challenges for underground mining such as poor geological conditions, extra ...