The approval allows the company to expand production at the mine to the approved limit of 15 million tons run of mine coal a year.
Wesfarmers Resources managing director Stewart Butel said the approval secured the long term future for the mine and its workforce.
"We acknowledge that the approval comes with comprehensive conditions and we are committed to continuing to work closely with the community and upholding our high standards of environmental management."
The company expects its future operations to move away from Muswellbrook on land owned by Bengalla and Coal & Allied, which manages operations at the project.
Wesfarmers holds 40% stake in the Bengalla mine, while CNA Bengalla Investments, Taipower Bengalla and Mitsui Bengalla own the remaining stakes of 40%, 10% and 10% respectively.
Image: Wesfarmers Resources will now be able to operate Bengalla mine until 2038. Photo: courtesy of Wesfarmers Resources.
