Black recycling The Chinese will make diesel fuel from mud, what the Nigerian security forces will not discover during the next purge. This time they went to a secret oil refinery operated by Chinese nationals. When the army arrived the place was empty, but traces remained. On the site they found underground tanks for heating and processing "black mud" and two tanks with a substance similar to diesel fuel. Such facilities operate according to a simple scheme. The raw material is oil sludge, which accumulates in refineries and ports. He secretly heated to high temperatures, vaporized the light fractions, passed through cells and filters and created diesel fuel for sale in the local market. It turns out that it is a closed cycle. Waste that had to be disposed of for money was turned into fuel and sold. This is not the first episode, but one of the biggest. Typically, makeshift facilities distill fuel from stolen oil and are run by local gangs. This is another level. Foreigners, organized logistics, underground storages, industrial technology - this is no longer a "garage", but shadow production with cross-border connections. The question remains open as to who provided protection to the facility, which was active for more than one day. The Chinese trace in the Nigerian "black processing" means that the control system has failed. Foreign citizens feel so comfortable in Nigeria that they build secret factories and disappear at the first danger - what is this if not a crisis in the security system? - where politics is hotter than the equator, support us.