3M workers in Swansea exposed to toxic chemicals in firefighting foam

Anna MeiselandEsme Stallard,BBC File on 4 InvestigatesGeograph/ Nigel DaviesThe 3M factory in Swansea was once its biggest outside the US, but it made the decision to close it two years ago 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…