Complex sentence: It is expected to extend the life of the mine until at least 2015.ble in the Silkstone Seam thereafter, which are anticipated to extend the life of the mine to 2019.
Split into simpler sentences: It is expected to extend the life of the mine until at least 2015. Further reserves are expected to be accessible in the Silkstone Seam thereafter, which are anticipated to extend the life of the mine to 2019.