According to the Indiana Gazette, the plan calls for enlarging the mine’s 2379-acre permit area by 1893 acres for a total of 4272 acres. The complex’s subsidence area would also jump from 1612 acres to 3505 acres.

A public notification of the permit, released late last year, also outlined that the coal processed at the company’s storage facility would grow from 500,000 to 745,000 tons annually.

The Burrell Township board of supervisors told the newspaper late last week that Rosebud recently filed with state regulators to make revisions to its permit to include the above, and that process is subject to public input.

While Rosebud officials declined to outline further details on Monday, it did confirm the plan to ILN and said the extension “was always envisioned”

Rosebud Mining, based in Kittanning, has 18 deep mines, six surface operations and seven preparation plants in Pennsylvania and Ohio. The company is Pennsylvania’s third-largest underground coal producer.