Coal and Allied has laid off more than a dozen workers at the Bengalla coal mine in the Hunter Valley.
Citing increasing costs and a strong Australian dollar, the Upper Hunter mine, located outside of Muswellbrook has axed approximately 18 supervisors and human resources staff the ABC reported.
The move was an effort to reduce costs, a Coal and Allied spokesman said.
Australian Mining reported that the Rio subsidiary began reviewing all operations in the region in September.
At the time it was reported nine support staff’s jobs were on the chopping block.
“Coal & Allied, like others in the industry, has made it clear it is facing the challenge of increasing costs in an environment of significantly lower coal prices and a high foreign exchange rate," they said at the time.
“We are working to improve our competitiveness by actively seeking ways to reduce costs across our business, which unfortunately means some roles will no longer be required.
“These are not decisions we take lightly. Jobs are being protected wherever possible and support is being provided for employees.”