Sent_en: 2id The mine is owned by Massey Energy but operated by Performance Coal Company, a subsidiary of Massey, which is the fourth largest coal producer in the US.
Sent_yy: Tambang ini merupakan milik Massey Energy tetapi dioperasikan oleh Performance Coal Company, anak cabang Massey, yang merupakan produsen batubara keempat terbesar di AS.