conciliation proceedings have failed. In Shalimar Works Ltd.'s case (supra), a delay of four years in raising the dispute after even reemployment of most of the old workmen was held to be fatal. In Nedungadi Bank Ltd.'s case (supra), a delay of seven years was held to be fatal and disentitled the workmen to any relief. In Ratan Chandra Sammanta's case (supra), it was held that a casual labourer retrenched by the employer deprives himself of remedy available in law by delay itself; lapse of time results in losing the remedy and the right as well. The delay would certainly be fatal if it has resulted in material evidence relevant to adjudication being lost and rendered not available. As noted earlier, the petitioner was dismissed from the services on 25.07.1995. He raised demand for the first time on 25.08.2003, which was nearly after eighteen years from the date of dismissal. Even thereafter, the Union raised the dispute on behalf of the petitioner by letter dated 16.08.2009 that is nearly after six years from 25.08.2003. In the facts and circumstances of the present case, we are, therefore, of the opinion that delay in the case has been so culpable as to dis-entitle the petitioner to any relief.