The pork industry was Ireland's fourth-largest agricultural sector in 2008, worth around 400 million euro a year. Three million pigs went through the country's farms annually, and roughly half of them were exported. In 2007, Ireland had shipped 113,000 tonnes of pig meat abroad - nearly half of it to the United Kingdom, the rest scattered across Europe, Russia, Singapore, China, Japan, and the United States. So when a single feed manufacturer near Fenagh contaminated 46 farms, the ripple did not stop at the Irish coast. Twenty-three countries were eventually affected. Chinese customs in Suzhou seized 23 tonnes of frozen Irish pork in January 2009. The Daily Mirror headlined the story 'Poison pork panic: Irish pigs were fed on plastic bags.' Le Monde led with 'Dioxin alert in Irish pork.' CNN ran it alongside BSE and the Chinese melamine milk scandal.

Millstream Power Recycling Limited sat outside Fenagh village, owned by a forty-three-year-old man named Robert Hogg. The plant recycled food waste into animal feed - a routine operation in modern agriculture. Investigators later concluded that the dioxin profile in the contaminated feed matched the chemicals found in electrical transformer oil; the oil had ended up in the food waste stream and from there into the feed and from there into the pigs. Millstream insisted it had only ever bought oil from legitimate suppliers in the Republic. Later reporting suggested the actual oil may have come from County Tyrone in Northern Ireland. The civil case Millstream brought against the man it accused of supplying the defective oil, Gerard Tierney of Blackrock, dragged on long after the headlines moved away.

Within two days of the recall announcement, 1,800 people had lost their jobs in the Irish pig industry; another 6,000 were judged at immediate risk. On 8 December, Rosderra Irish Meats - the country's largest pork processor - turned away all 850 of its employees at four plants and told them to sign on for unemployment. Workers from the affected plants in Edenderry, Waterford, and Kilkenny held a lunchtime protest at Leinster House on 11 December, demanding government action. The slaughter of pigs was halted until the government promised compensation. Around 100,000 pigs were eventually destroyed, and the European Food Safety Authority assessed that the health risk to consumers had been minimal - even in the extreme case of someone eating contaminated pork every day for 90 days, the EFSA said, exposure would 'reduce protection but not necessarily lead to adverse health effects.' For the farmers, processors, and 1,800 workers, the calculation was less reassuring.

The crisis cost the Irish economy an estimated 100 million euro and lasting damage to international confidence in Irish pork. Some analysts said the recovery would take a decade. It led, eventually, to one of the most thorough animal-feed testing regimes in Europe. Working with Chris Elliott at Queen's University Belfast, the feed industry put in place a systematic monitoring system that by 2022 was assessing over six million tonnes of animal feed each year. The crisis became a case study in food-safety circles - a story of how one obscure recycler in a Carlow village could expose the brittleness of a globalised supply chain in seventy-two hours. Christmas dinners in 2008 went short of Irish bacon. By the spring, the pork was back on shelves. The trust took longer.