Icyegeranyo kivuga ko ibipimo byafashwe mu bihugu 8 bitandukanye by'Afurika kuri amwe mu mavuta ya mazutu byerekanye ko urugero rwa sulphur iri muri aya mavuta rukubye inshuro zirenga 300 ugereranije n'urugero rwemerwa mu bihugu by'i Burayi.
