Substitution of legal representatives: proceedings continue despite death or insolvency; representatives must apply within ninety days or proceedings may abate. Rule 53 provides that proceedings do not abate on death, insolvency, or winding up and may be continued by or against executors, administrators, legal representatives, assignees, receivers or liquidators. The legal representative of a deceased party must apply to be brought on record within ninety days of death; failure to apply leads to abatement, although the Tribunal may allow substitution for good and sufficient reasons before disposal on merits.