Review of the orders of the Tribunal

The Tribunal may, either on its own motion or on the application of any party interested, within 30 days, review its own decision or order in any case and pass in reference thereto such order or orders as it thinks fit: Provided that no such application made by any party shall be entertained unless the Tribunal is satisfied that there has been a discovery of a new and an important matter or evidence which after the exercise of due diligence was not within the knowledge of such party, or could not be produced by him, at the time when its decision was made, or there has been some mistake or error apparent on the face of the record, or for any other sufficient reason: Provided further, that no such order shall be varied or revised unless notice has been given to the parties interested to appear and an opportunity has been given to be heard in support of such order within 30 days.