Welsh politicians urge openness on impact of mud from nuclear power station

Hinkley Point C building site waste due to be dumped in sea near Cardiff

The builders of the Hinkley Point C nuclear power station must be completely open about the potential environmental impact of dumping tens of thousands of tonnes of mud in the sea near Cardiff, politicians in Wales have said.

EDF is proposing to deposit mud excavated as part of the huge construction project on the Somerset coast in the waters off the Welsh capital next year.