In Appalachia, Arch currently operates five underground mines. In 2016 Arch entered and exited bankruptcy. The company has recently sold a number of assets to focus on its metallurgical coal operations in the region. We expect Arch's Appalachian production to ramp up from 7.7 Mst in 2021 to 9.5 Mst in 2023. Wood Mackenzie’s asset reports are built from the bottom up, incorporating a number of granular data metrics to ultimately produce our industry standard cash operating costs. This report contains a detailed asset note giving you a holistic view of the asset, including an operational overview through to a timeline of events from inception to now. This qualitative analysis is supplemented by the associated Excel download which enables interrogation of a whole series of cost and production metrics over the life of the asset.