PoliticsBrazilian oil independents’ shares sink on crude exports taxShares of Prio, 3R Petroleum, PetroReconcavo and Enauta were down following government announcementNew tax: Brazil's Finance Minister Fernando Haddad speaks during a news conference in Brasilia to announce the creation of a new tax on oil exportsPhoto: REUTERS/SCANPIXFabio PalmigianiRio de Janeiro