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BBC, Dec. 16, 2025
Dozens of factory workers were exposed to toxic chemicals within firefighting foam over decades, BBC File on 4 Investigates can reveal.
Multi-billion-pound US manufacturer, 3M, failed to tell employees at its Swansea site they were using foam containing two forever chemicals, now classed as carcinogenic, despite knowing for decades of the health risks.
The company said it would stop manufacturing the forever chemicals – so called because they persist in the environment – in 2002, but failed to remove them from the factory resulting in an environmental accident four years later.
3M said that the health and safety of its workers and their families were "critical priorities" for the company.
The factory in Gorseinon, Swansea, opened in 1952 and for decades was 3M's largest outside of the US.
It employed more than 1,000 people from across south Wales to manufacture nappy fastenings and video tape.
In 2023, 3M made the decision to close the factory and applied for planning permission to redevelop the site.
BBC File on 4 Investigates discovered a land contamination report amongst hundreds of documents 3M submitted to the local council - it said the site is polluted with two toxic forever chemicals, PFOS and PFOA.
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