Investigating the hidden risks of abandoned metal mines in Wales

Experts are calling for urgent testing to take place in areas of Wales’ once-thriving metal mining industry in an attempt to uncover the potential public health threats 

The inquiry looks into the human health risks set by pollution from abandoned metal mines and shows the need for urgent action. 

Where are these mines located? 

Over 400 abandoned metal mines fill the landscape north of Ceredigion. The rivers Ystwyth, Rheidol, and Clarach, once home to communities, now bear the heavy burden of pollution, contaminated by toxic metals like zinc, cadmium, and lead.

The legacy of these mines stretches back centuries, with sites like Cwmystwyth being around in the Bronze Age and falling silent in 1950. 

However, their remnants, areas filled with hazardous metals, continue to cast a long shadow over the land. Many of the locals rely on filtration systems to protect their water supply, a cautious measure against the health risks. 

The impact on agriculture

Studies by experts like Dr. Sartorius paint a troubling picture, revealing eggs contaminated with levels of lead deemed perilous, particularly for children. Even horses, who are grazing on the grass nearby, have come in contact with diseases linked to exposure to these toxic metals.

Metal mine pollution threatens agriculture and livestock. Contaminated floodwaters have contaminated grass, leading to the loss of animals. The soil itself, once fertile, now has dangerous concentrations of lead. 

In response to these concerns, both the UK and Welsh governments have decided to take action. Businesses are required to stick to strict regulations, ensuring food safety remains essential. Meanwhile, the Welsh government is working alongside stakeholders to assess and manage the pollution’s impact, offering support to farmers struggling with the fallout.

Experts from universities and regulatory bodies will look into the scale of the problem and ways to tackle it. MPs will hear from Natural Resources Wales to support advice given about the health impacts.