CONSTRUCTION union Ucatt hit out yesterday at a five-year delay in bringing charges against employers for the deaths of four workers killed on a development project.

The four men, brothers Thomas and Daniel Hazelton, Adam Taylor and Peter Johnson, died on January 21 2011, in what the union described as the worst fatal accident in the industry for many years.

They were erecting a large steel structure in a pit 13 feet below ground at the Claxton Engineering Services yard in Great Yarmouth, Norfolk, when the structure collapsed and crushed them. They were pronounced dead at the scene.