One of the panels, LW910, could be subject to more mine planning changes.

Centennial said there was potential to use part of the corridor associated with this panel for long term access to potential coal resources to the northeast.

While the feasibility of this resource remained under investigation, two options for the panel were presented.

If there is a viable resource to the northeast the panel will be just 120 metres wide and 2500m long to provide space for the development of four main headings.

If those potential resources are not viable the panel is expected to be the same length but 200m wide.

Centennial is also seeking approval for panel 900W to west of the mine.

The panel is expected to be 284m wide and about 2080m in length, and will extend partly into the mining lease of the Centennial-operated Springvale longwall mine.

Bord and pillar mining of the resources in these panels was considered not viable based on studies undertaken by Strata Engineering.

Development of LW910 is slated for October with extraction possibly starting in August, 2015.

Development of panel 900W is expected in October with extraction scheduled in August, 2014.

The company is also seeking state government environmental approval for the two panels.

Centennial does not expect the plans to host any significant environmental impacts.

The federal application was made to meet the requirements of the Environment Protection and Biodiversity Conservation Act.

Angus Place produced 3.3Mt run of mine in 2010.

Centennial is a subsidiary of Thai energy giant Banpu.