He looked like a security guard in a suit and hi-viz gilet, but he unfurled a banner saying "Nuclear: wrong answer", and as he crawled along a high iron girder, the word "Greenpeace" was revealed on the back of his jacket.
Kenneth Joyce, 53, of Lanchester, suffered fatal head and neck injuries in 2008 after falling to the ground when a girder struck the cherry picker in which he was standing.