Immediately after the award was pronounced,while the iron was still hot as it were,the employees apparently realised that the employer might take advantage of the circumstance that it was not clearly mentioned in the award that all the employees were to get additional pay of Rs.150/-and Rs.100/-respectively and might contend that the Tribunal had only revised the wage scales by increasing the salary on entry into the service and restructuring the scale of pay and never granted any ad hoc increase of salary to all employees