1454 1463 of 1981 filed by M/s. Andhra Steel Corporation Ltd. The plea with regard to promissory estoppel is to be found in ground no.(i) which reads : "Whether in view of the fact that the Petitioner had acted upon the Government orders dated 2.11.1977 and 26.11.1977 and thus altered its position (as without the concessions being granted to the Petitioner they would not have possibly run the industry, since it was bound to suffer huge (losses) is the State Government stopped from revoking, or modifying the same before the full period of concession had run out of efflux of time that is, by 31 10 1980?" (emphasis supplied) Almost identical is ground no.(i) in the special leave petition giving rise to Civil Appeal Nos. 1642 1645 of 1981.