Saving the Environment of Navan Townlands
"Protecting the legacy of our children"
About Us....
We are a group that represents residents living beside Randalstown/Simonstown Tailings Dam. SENT aims to raise awareness about the ever-present dangers for communities and the environment and we oppose the further expansion of the mine Tara Deep along with the proposed second Tailings Dam at Sillogue/Simonstown Our overall aim is to work for the protection of our environment especially with concerns for the children of future generations.
Recent Articles
October 6, 2026
Serious concerns raised at SENT community meeting
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September 10, 2026
Our Concerns
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September 10, 2026
Tailings – What are they?
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September 9, 2026
Tailings Failure – Emergency Plan?
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September 7, 2026
Meath Chronicle recent articles
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August 30, 2026
Ireland’s Largest Waste Storage Facility
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Tailings - What are they?
Tailings are finely ground waste rock left after valuable ore is extracted. They may contain heavy metals and processing reagents. Coarser material can be mixed with cement for underground backfill, while finer particles are combined with water and pumped as slurry to a storage dam. At Randalstown, waste from Boliden Tara Mines, Europe’s largest zinc mine, travels about 5 km through a pipeline that passes beneath the Blackwater River and runs alongside the Boyne Valley to the Lakelands Greenway. The 255-hectare waste facility is in the countryside north of Navan and is estimated to hold more than 50 million tonnes of toxic mine waste today.
Our Concerns
Residents have serious concerns about the Randalstown tailings facility and proposals for a second site at Sillogue and Simonstown. The original dam, built in stages from the 1970s, now requires strengthening to meet international standards. Repeated pipeline failures, most recently in November 2025, and numerous EPA non-compliances raise further questions about safety and oversight. Because the original facility was unlined, communities fear toxic seepage into groundwater, while billions of litres of treated mine water enter local rivers annually. People living nearby have also reported concerns about possible effects on their health, wellbeing and the local environment over time.
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Stay informed about our campaign by signing up for our newsletter. If you would like to get involved, share your time or expertise, or ask a question about the issues raised here, please send us a message using the contact form below—we would be delighted to hear from you.