CONSOL Energy, Consol Coal Group - Underground coal producer. Celtic Energy Ltd. - Coal producer. Arch Coal Inc. - Controls a domestic reserve base totaling 3.5 billion tons supplies approximately one-tenth of America's total coal supply. García-Munté Energía - Importers and distributors of petcoke, anthracite and coal. Erie Coke Corporation - Producer of high-performance foundry coke. Tonawanda Coke Corporation - Foundry coke supplier. P&N Resources - Family-owned company that produces and markets coal, natural gas and other natural resource products and offers expertise in the remediation of environmental and water pollution from mining and industrial activities. Based in Pennsylvania. Oxbow Corporation - Producer, marketer and shipper of petroleum coke, coal, metallurgical coke, gypsum, and limestone.