Petróleo Brasileiro S.A. - Petrobras explores, produces, and sells oil and gas in Brazil and internationally. The company operates through three segments: Exploration and Production; Refining, Transportation and Marketing; and Gas and Power. The Exploration and Production segment explores, develops, and produces crude oil, natural gas liquids, and natural gas primarily for supplies to the domestic refineries. The Refining, Transportation and Marketing segment engages in the refining, logistics, transport, acquisition, and exports of crude oil; and production of fertilizers, as well as holding interests in petrochemical companies. The Gas and Power segment is involved in the logistic and trading of natural gas and electricity; transportation and trading of LNG; generation of electricity through thermoelectric power plants; renewable energy businesses; low carbon services; and natural gas processing business, as well as production of biodiesel and its co-products. The company also engages in prospecting, drilling, refining, processing, trading, and transporting crude oil from producing onshore and offshore oil fields, and shale or other rocks, as well as oil products, natural gas, and other liquid hydrocarbons. In addition, it engages in research, development, production, transport, distribution, and trading of energy. Petróleo Brasileiro S.A. - Petrobras was incorporated in 1953 and is headquartered in Rio de Janeiro, Brazil.

Ameren Corporation, together with its subsidiaries, operates as a public utility holding company in the United States. The company operates through four segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Transmission. It engages in the rate-regulated electric generation, transmission, and distribution activities; and rate-regulated natural gas distribution business. In addition, the company generates electricity through coal, nuclear, and natural gas, as well as renewable sources, such as hydroelectric, wind, methane gas, and solar. It serves residential, commercial, and industrial customers. The company was founded in 1881 and is headquartered in Saint Louis, Missouri.

Alliance Resource Partners, L.P., a diversified natural resource company, produces and markets coal primarily to utilities and industrial users in the United States. The company operates through four segments: Illinois Basin Coal Operations, Appalachia Coal Operations, Oil & Gas Royalties, and Coal Royalties. It produces a range of thermal and metallurgical coal with sulfur and heat contents. The company operates seven underground mining complexes in Illinois, Indiana, Kentucky, Maryland, Pennsylvania, and West Virginia. In addition, it owns and leases oil and gas mineral interests and equity interests; and leases its coal mineral reserves and resources to its mining complexes; and leases land and operates a coal loading terminal on the Ohio River at Mt. Vernon, Indiana. Further, the company offers various mining technology products and services, including data network, communication and tracking systems, mining proximity detection systems, industrial collision avoidance systems, and data and analytics software. It also exports its products. The company was founded in 1971 and is headquartered in Tulsa, Oklahoma.

CONSOL Energy Inc., together with its subsidiaries, produces and sells bituminous coal in the United States and internationally. It operates through two segments, Pennsylvania Mining Complex (PAMC) and CONSOL Marine Terminal. The company's PAMC segment engages in the mining, preparing, and marketing of bituminous coal to power generators, industrial end-users, and metallurgical end-users. This segment includes the Bailey Mine, the Enlow Fork Mine, the Harvey Mine, and the central preparation plant. Its CONSOL Marine Terminal segment provides coal export terminal services through the Port of Baltimore. The company also develops and operates the Itmann Mining Complex located in Wyoming County, West Virginia; and Greenfield Reserves and Resources located in the Northern Appalachian, Central Appalachian, and Illinois basins. CONSOL Energy Inc. was founded in 1864 and is headquartered in Canonsburg, Pennsylvania.

Cosan S.A. engages in the fuel distribution business. It operates through Raízen, Compass, Moove, Rumo, and Radar segments. The company's Raízen segment engages in the production, commercialization, origination, and trading of ethanol, bioenergy, renewable sources, and sugar; trading and resale of electricity; and distribution and commercialization of fuels and lubricants. Its Compass segment distributes piped natural gas to industrial, residential, commercial, automotive, and cogeneration customers; and develops infrastructure projects in a regasification terminal, offshore gas pipeline, and thermal generation projects utilizing natural gas, as well as commercialization of electricity and natural gas. The company's Moove segment produces and distributes lubricants under the Comma brand. Its Rumo segment provides logistics services for rail transportation, port storage, and loading of goods, including grains and sugar; and leases locomotives, wagons, and another railroad equipment, as well as operates containers. The company's Radar segment manages agricultural property. It operates in Brazil, England, France, Spain and Portugal, Argentina, Bolivia, Uruguay and Paraguay, the United States, Asia, and internationally. Cosan S.A. was founded in 1936 and is headquartered in São Paulo, Brazil.

Companhia Siderúrgica Nacional operates as an integrated steel producer in Brazil and Latin America. It operates through five segments: Steel Industry, Mining, Logistics, Energy, and Cement. The company offers flat steel products, such as hot and cold rolled, galvanized, galvalume, pre-painted, and metal sheets products; coil, sheets, and derivatives; tiles and derivatives, pipes, and profiles; long steel products; steel packaging solutions for the food industry; chemical packaging solution; and carbochemical products. It also provides steel cutting services; produces and sells cement; operates railway and port facilities; and generates electric power from its thermoelectric co-generation and hydroelectric power plants. In addition, the company explores for iron ore reserves at Casa de Pedra and Engenho mines located in the city of Congonhas; and limestone and dolomite at the Bocaina mine located in the city of Arcos in the state of Minas Gerais, Brazil, as well as produces tin. Companhia Siderúrgica Nacional was founded in 1941 and is headquartered in São Paulo, Brazil.

Peabody Energy Corporation engages in coal mining business in the United States, Japan, Taiwan, Australia, India, Brazil, Belgium, Chile, France, Indonesia, China, Vietnam, South Korea, Germany, and internationally. The company operates through Seaborne Thermal, Seaborne Metallurgical, Powder River Basin, Other U.S. Thermal, and Corporate and Other segments. It is involved in the mining, preparation, and sale of thermal coal primarily to electric utilities; mining bituminous and sub-bituminous coal deposits; low sulfur and high British thermal unit thermal coal; and mining metallurgical coal, such as hard coking coal, semi-hard coking coal, semi-soft coking coal, and pulverized coal injection coal. The company supplies coal primarily to electricity generators, industrial facilities, and steel manufacturers. It also engages in marketing and brokering of coal from other coal producers; trading of coal and freight-related contracts, as well as provides transportation-related services. The company was founded in 1883 and is headquartered in Saint Louis, Missouri.

American Resources Corporation, together with its subsidiaries, extracts, processes, transports, and sells metallurgical coal to the steel and industrial industries. It supplies raw materials; and sells coal used in pulverized coal injections. The company was founded in 2006 and is headquartered in Fishers, Indiana.