The report of the Davies Tribunal which inquired into the disaster was highly critical of the NCB and Robens. He had proposed to appear at the outset of the enquiry to admit the NCB's full responsibility for the disaster, but the Chairman of the Tribunal advised him that this would not be necessary. In the event, when it was clear that his earlier comments to reporters had been misinterpreted at the Tribunal as a denial of responsibility, he offered to appear at the enquiry to set the matter straight. He conceded that the NCB was at fault, an admission which would have rendered much of the inquiry unnecessary had it been made at the outset, notwithstanding the advice of Lord Edmund-Davies that his appearance was not necessary. After the report was published in August 1967, Robens wrote to Marsh, the Minister of Power, offering his resignation; this was rejected by him and by Prime Minister Wilson, although several cabinet members argued strongly that Robens ought to be removed.