Antonio Eduardo Monteiro de Castro

Petrobras Argentina SA engages in the development and exploration of oil and gas properties. It operates through the following business segments: Generation, Distribution of Energy, Oil and Gas, Refining and Distribution, Petrochemicals, and Holding and Other Business. The Generation segment engages in generation through the following businesses: Central Térmica Genelba, Central Térmica Loma la Lata, Central Térmica Ingeniero White, Central Térmica Güemes, Central Térmica Piquirenda, Central Térmica Parque Pilar, EcoEnergía, Hidroeléctrica Nihuiles and Hidroeléctrica Diamante, HPPL, Corti, Pampa Energia WPP and De la Bahi WPP, and Enecor. The Distribution of Energy segment engages in the electricity distribution through its subsidiary Edenor. The Oil and Gas segment engages in oil and gas business directly through its investments in Oleoductos del Valle S.A. The Refining and Distribution segment engages in the refining and distribution business through its storage facility in Dock-Sud and Refinor. The Petrochemicals segment operates through its styrenics operations and the catalytic reformer operations conducted in its Argentine plants. The Holding and Other Business segment holds interest in Petrobras Hispano Argentina S.A and Transener. The company was founded in 1946 and is headquartered in Buenos Aires, Argentina.

Elekeiroz SA engages in the production, marketing, export, and import of chemical and petrochemical products. It operates through the Organic and Inorganic Chemicals segments. The Organic Chemicals segment includes oxo-alcohols, phthalic anhydride, maleic anhydride, plasticizers, unsaturated polyester resins, formaldehyde, urea-formaldehyde concentrate, and fumaric acid. The Inorganic Chemicals segment is composed of sulfuric acid, and some resale activities. The company was founded by Luiz M. Pinto de Queiroz in 1894 and is headquartered in Várzea Paulista, Brazil.

Australasian Institute of Mining & Metallurgy, also known as AusIMM, is the leading organization for professionals working in the resources sector. AusIMM is based in Carlton, Australia, and has subsidiaries in Hong Kong. The Australian company's main focus is on shaping careers, showcasing leadership, creating communities, and upholding standards.

Liquigás Distribuidora SA distributes and commercializes liquefied petroleum gas (LPG). Its products include LPG cylinder and bulk gas. The company was founded in 1953 and is headquartered in São Paulo, Brazil.