The Swiss commodity traders Trafigura and Vitol are among a number of companies accused of exporting what campaigners call “African quality” diesel, blending products in European facilities to create fuels with sulphur levels that are sometimes hundreds of times over European limits, according to a three-year research project by the Swiss NGO Public Eye.
Read more: https://www.theguardian.com/world/2016/sep/15/trafigura-vitol-bp-dump-dirty-diesel-africa-swiss-ngo-public-eye