NE Atlantic dump zone, ~1,200 km off the Bay of Biscay
#00131
Case study of
#00126 Deep-sea disposal by dilution and dispersion
Implementer
United Kingdom, France, Belgium, Netherlands, Switzerland and other European states
Timeline
Jan 1, 1949 – Dec 31, 1982
Location
Description
From 1949 to 1982, European states — the United Kingdom in large majority, alongside France, Belgium, the Netherlands, Switzerland and others — sank 200,000+ drums of radioactive waste encased in resin, bitumen or cement onto the abyssal plain (~4,700 m depth) across a ~14,500 km² zone in the NE Atlantic. Direct observation five decades later (NODSSUM 2025–2026) found many drums in advanced corrosion, several already breached and spilling contents onto the sediment, with on-site radionuclide activity higher than expected for the zone. The material is dispersed across abyssal depth and cannot practically be retrieved.
Metrics
3Lessons learned
- The containment matrix (resin/bitumen/cement) and drums did not stay intact over the decades the waste remains hazardous — structural integrity must be validated over the full hazardous lifetime, not assumed.
- Dispersal across ~14,500 km² at 4,700 m depth makes the outcome irreversible: there is no practical retrieval or remediation once material is dumped at abyssal scale.
- The approach relied on untested assumptions about deep-ocean dilution and stability, externalising a permanent, unquantified risk to a shared commons without a reversal mechanism.
Sources
2Documented Jul 4, 2026