The Ship That Poisoned a City

The tanker Probo Koala lay at anchor off Amsterdam in July 2006, its tanks heavy with a foul-smelling residue from a gasoline run. The Dutch processor contracted to treat the waste quoted a price that Trafigura, the charterer, deemed too high. Rather than pay, the Swiss trading house arranged for the ship to sail south. Weeks later, on a humid August night, tanker trucks pumped roughly 500 cubic metres of that same dark sludge into open pits and municipal dumps across Abidjan, Ivory Coast's commercial capital. By morning, the air over the city smelled of rotten eggs and burnt rubber. Residents near the dumpsites began vomiting, struggling to breathe, breaking out in rashes. Hospital wards filled within hours.

A Deal Gone Wrong in Amsterdam

The Probo Koala, a Greek-owned, Panamanian-flagged vessel, had loaded gasoline at a refinery in the Netherlands earlier that summer. After discharge, its tanks needed cleaning — a routine operation that produces "slops," a mixture of wash water, hydrocarbons, and chemical additives. Trafigura, then a fast-growing but still privately held commodities trader, had hired a Dutch firm, Amsterdam Port Services, to handle the waste. When the processor inspected the cargo, it classified the slops as hazardous waste containing high levels of hydrogen sulphide and mercaptans — compounds that attack the nervous and respiratory systems. The treatment cost jumped from an estimated €27 per cubic metre to more than €500. Trafigura refused the new quote. Internal emails later revealed in court showed the company's chartering team discussing cheaper alternatives in West Africa. On 19 August, the Probo Koala slipped its moorings and headed for the Gulf of Guinea.

Midnight Dumping in Abidjan

The ship arrived off Abidjan on 31 August. A local contractor, Compagnie Tommy, had been hired to receive the waste. It owned no treatment facility, no secure landfill, no specialised equipment — just a fleet of tanker trucks. Over the night of 31 August to 1 September, drivers ferried the slurry to at least 18 sites around the city: a rubbish tip in the district of Akouédo, a drainage canal near the international airport, open ground beside a military camp, even the grounds of the national electricity company. Some trucks simply opened their valves on the roadside. The waste, still volatile, released clouds of hydrogen sulphide gas. Within hours, the first patients arrived at Abidjan's hospitals complaining of burning eyes, nausea, and respiratory distress. By 4 September, the Ivorian health ministry counted more than 23,000 consultations linked to the dumping; independent estimates later ranged above 100,000. At least fifteen deaths were officially recorded, though victims' groups believe the toll was higher.

Denial, Then Settlement

Trafigura's first public statement, issued from Geneva on 5 September, described the material as "off-specification gasoline" and "washings from tank cleaning," insisting it was not toxic. The claim collapsed under laboratory analysis from the Netherlands, the UK, and Ivory Coast, all of which confirmed hazardous concentrations of sulphur compounds. Under mounting diplomatic and media pressure, the company shifted course. In February 2007, Trafigura paid $198 million to the Ivorian government to fund clean-up, medical care, and waste-management infrastructure — without admitting legal liability. A second reckoning came in September 2009, when a London law firm secured a £30 million settlement for roughly 30,000 claimants in a UK class action. The payouts, averaging about £1,000 each, were distributed through a trust overseen by the High Court. Trafigura again denied negligence but acknowledged the settlement would "bring closure to the affected communities."

Aftershocks in the Trading World

The affair forced a reckoning inside the opaque world of physical commodities trading. For years, houses like Trafigura had operated largely out of public view, moving oil, metals, and minerals through jurisdictions where regulation was thin and enforcement thinner. The Probo Koala case demonstrated that a logistical decision taken in a European port could kill people in a West African city, and that the chain of contracts — charterer to shipowner to local subcontractor — did not insulate the originator from accountability. Dutch prosecutors eventually convicted Trafigura's then-head of chartering and the ship's master of illegally exporting hazardous waste; the company itself paid a €1 million fine in a 2010 Dutch settlement. The United Nations Environment Programme cited the incident in a 2011 report calling for stricter global controls on the transboundary movement of hazardous waste. Within Trafigura, the episode triggered a wholesale overhaul of waste-management procedures, third-party vetting, and environmental compliance — changes the firm now points to as evidence of lessons learned.

Yet the numbers tell their own story. The $198 million paid to Ivory Coast and the £30 million to victims represented a fraction of Trafigura's annual revenue, which topped $244 billion by 2023. The Probo Koala, renamed and reflagged, returned to service. The dumpsites in Abidjan were remediated, though some residents say the soil still smells after heavy rain. The episode remains the most visible scar on a company that prefers to operate in the shadows of global supply chains — a reminder that in the trade of essential resources, the physical reality of what moves through the pipes and holds can never be fully abstracted away.

This is one episode in a much longer story. For the full account of the global commodities trade, read “Trafigura” by Denise Russell on MixCache.com.