What Is Brofiscin Quarry? The Welsh Toxic-Waste Site in Buried With Michael Sheen
Buried With Michael Sheen investigates the industrial waste legacy surrounding several former landfill sites in south Wales. At the centre of the story is Brofiscin Quarry, a disused limestone quarry near Groesfaen in Rhondda Cynon Taf that was used for industrial waste disposal during the 1960s and 1970s.
The programme follows Michael Sheen as he revisits claims linked to the late farming consultant and environmental campaigner Douglas Gowan. The Sheffield DocFest description says Gowan recorded his final testimony with Sheen before his death, giving the film a personal connection as well as an investigative purpose.
Why Brofiscin Quarry became controversial
Welsh Government records say Brofiscin received waste from several industrial companies, including Monsanto, BP and ICI. The site later became subject to regulatory action after pollution entered a nearby stream and affected land used for agriculture.
One of the main concerns was the presence of polychlorinated biphenyls, or PCBs. These chemicals were once used in electrical equipment and industrial manufacturing because they resist heat and chemical breakdown. That durability also allows them to remain in soil, sediment and living organisms for long periods.
The International Agency for Research on Cancer classifies PCBs as carcinogenic to humans. They are now treated as persistent organic pollutants and hazardous waste under UK rules.
What was done to the site
Brofiscin was designated a contaminated-land special site in 2005 because of pollution affecting controlled waters. Responsibility for regulation passed to the Environment Agency in Wales, later Natural Resources Wales.
Public records from Rhondda Cynon Taf County Borough Council state that remediation work was completed in 2013. The measures included capping the site, installing leachate-collection drainage, adding pressure-relief trenches and improving surface-water controls. Welsh Government documents also identify Brofiscin as one of the historic landfill sites that received public funding for investigation and remediation.
That does not erase the wider questions. A site can be remediated while records about how waste was transported, who knew about its contents and whether other locations remain affected continue to be contested.
What the evidence can—and cannot—show
Official records confirm industrial waste disposal, pollution incidents, regulatory intervention and remediation. They do not automatically prove every allegation about the total quantity of waste, corporate knowledge or specific illnesses attributed to the sites.
That distinction matters. Environmental contamination is assessed through sampling, exposure pathways and risk modelling, not through proximity alone. The documentary’s broader significance lies in connecting a local Welsh site to a national problem: the long afterlife of industrial decisions made before modern controls for hazardous waste were in place.
Sources
- BBC iPlayer: Buried With Michael Sheen
- Sheffield DocFest: Buried With Michael Sheen
- Welsh Government: information on PCB contamination and Brofiscin Quarry
- Welsh Government: contaminated-land remediation funding
- Rhondda Cynon Taf County Borough Council: contaminated-land public register
- International Agency for Research on Cancer: PCBs and carcinogenicity
Sources
- BBC iPlayer: Buried With Michael Sheen
- Sheffield DocFest: Buried With Michael Sheen
- Welsh Government: PCB contamination in Wales
- Welsh Government: contaminated-land remediation
- Rhondda Cynon Taf County Borough Council: contaminated-land public register
- International Agency for Research on Cancer: PCBs and carcinogenicity