The plant, to be built over three years in Argentina’s petrochemicals hub in Bahia Blanca, underscores a broader trend of the nation finding ways to monetize its vast shale gas reserves. These include the Southern Energy SA liquefied natural gas project, in which Pampa has a stake, and another bigger LNG venture involving Italy’s Eni SpA and Adnoc, Abu Dhabi’s national oil company, which still needs to secure financing. Profertil SA, an existing Argentine fertilizer operation, is also considering a big expansion.